audio_core: Add audio stretching support

gl_rasterizer_cache: B5G6R5U should use GL_RGB8 as an internal format.

- Fixes a regression with Sonic Mania with ARB_texture_storage.

pl_u: Eliminate mutable file-scope state

shader_decompiler:  Implemented (Partially) Texture Processing Modes

kernel/errors: Amend invalid thread priority and invalid processor ID error codes

svc: Do nothing in svcOutputDebugString() if given a length of zero

Set yuzu project as default StartUp Project in Visual Studio

Set yuzu project as default StartUp Project in Visual Studio

This is what the kernel does for an out-of-range processor ID.

While unlikely, it does avoid constructing a std::string and
unnecessarily calling into the memory code if a game or executable
decides to be really silly about their logging.

This should be a u64 to represent size.

service/prepo: Move class into the cpp file

game_list: Resolve variable shadowing within LoadCompatibilityList()

service/audio: Replace includes with forward declarations where applicable

Port Citra #4047 & #4052: add change background color support

gl_rasterizer_cache: Improve accuracy of caching and copies.

gl_rasterizer: Use ARB_texture_storage.

- Fixes several rendering issues with Super Mario Odyssey.

"value" is already a used variable name within the outermost ranged-for
loop, so this variable was shadowing the outer one. This isn't a bug,
but it will get rid of a -Wshadow warning.

This way, we aren't constructing unnecessary QJsonValue instances.

A few headers were including other headers when a forward declaration
can be used instead, allowing the include to be moved to the cpp file.

Converts the PL_U internals to use the PImpl idiom and makes the state
part of the Impl struct, eliminating mutable global/file state.

shader_decompiler: Implemented LEA and PSET

This doesn't need to be exposed within the header and be kept in the
translation unit, eliminating the need to include anything within the
header.

- This was once an optimization, but we no longer need it with the cache reserve.
- This is also inaccurate.

It allows us to use texture views and it reduces the overhead within the GPU driver.

But it disallows us to reallocate the texture, but we don't do so anyways.

In the end, it is the new way to allocate textures, so there is no need to use the old way.

hle/service: Default constructors and destructors in the cpp file where applicable

Fixed renderdoc input/output textures not working due to multiple render targets

externals: Place font data within cpp files

This places the font data within cpp files, which mitigates the
possibility of the font data being duplicated within the binary if it's
referred to in more than one translation unit in the future. It also
stores the data within a std::array, which is more flexible when it
comes to operating with the standard library.

Furthermore, it makes the data arrays const. This is what we want, as it
allows the compiler to store the data within the read-only segment. As
it is, having several large sections of mutable data like this just
leaves spots in memory that we can accidentally write to (via accidental
overruns, what have you) and actually have it work. This ensures the
font data remains the same no matter what.

When a destructor isn't defaulted into a cpp file, it can cause the use
of forward declarations to seemingly fail to compile for non-obvious
reasons. It also allows inlining of the construction/destruction logic
all over the place where a constructor or destructor is invoked, which
can lead to code bloat. This isn't so much a worry here, given the
services won't be created and destroyed frequently.

The cause of the above mentioned non-obvious errors can be demonstrated
as follows:

------- Demonstrative example, if you know how the described error happens, skip forwards -------

Assume we have the following in the header, which we'll call "thing.h":

\#include <memory>

// Forward declaration. For example purposes, assume the definition
// of Object is in some header named "object.h"
class Object;

class Thing {
public:
    // assume no constructors or destructors are specified here,
    // or the constructors/destructors are defined as:
    //
    // Thing() = default;
    // ~Thing() = default;
    //

    // ... Some interface member functions would be defined here

private:
    std::shared_ptr<Object> obj;
};

If this header is included in a cpp file, (which we'll call "main.cpp"),
this will result in a compilation error, because even though no
destructor is specified, the destructor will still need to be generated by
the compiler because std::shared_ptr's destructor is *not* trivial (in
other words, it does something other than nothing), as std::shared_ptr's
destructor needs to do two things:

1. Decrement the shared reference count of the object being pointed to,
   and if the reference count decrements to zero,

2. Free the Object instance's memory (aka deallocate the memory it's
   pointing to).

And so the compiler generates the code for the destructor doing this inside main.cpp.

Now, keep in mind, the Object forward declaration is not a complete type. All it
does is tell the compiler "a type named Object exists" and allows us to
use the name in certain situations to avoid a header dependency. So the
compiler needs to generate destruction code for Object, but the compiler
doesn't know *how* to destruct it. A forward declaration doesn't tell
the compiler anything about Object's constructor or destructor. So, the
compiler will issue an error in this case because it's undefined
behavior to try and deallocate (or construct) an incomplete type and
std::shared_ptr and std::unique_ptr make sure this isn't the case
internally.

Now, if we had defaulted the destructor in "thing.cpp", where we also
include "object.h", this would never be an issue, as the destructor
would only have its code generated in one place, and it would be in a
place where the full class definition of Object would be visible to the
compiler.

---------------------- End example ----------------------------

Given these service classes are more than certainly going to change in
the future, this defaults the constructors and destructors into the
relevant cpp files to make the construction and destruction of all of
the services consistent and unlikely to run into cases where forward
declarations are indirectly causing compilation errors. It also has the
plus of avoiding the need to rebuild several services if destruction
logic changes, since it would only be necessary to recompile the single
cpp file.

* Add open-source shared fonts

* Address review comments

* Joystick hotplug support (#4141)

* use SDL_PollEvent instead of SDL_JoystickUpdate

Register hot plugged controller by GUID if they were configured in a previous session

* Move SDL_PollEvent into its own thread

* Don't store SDLJoystick pointer in Input Device; Get pointer on each GetStatus call

* Fix that joystick_list gets cleared after SDL_Quit

* Add VirtualJoystick for InputDevices thats never nullptr

* fixup! Add VirtualJoystick for InputDevices thats never nullptr

* fixup! fixup! Add VirtualJoystick for InputDevices thats never nullptr

* Remove SDL_GameController, make SDL_Joystick* unique_ptr

* fixup! Remove SDL_GameController, make SDL_Joystick* unique_ptr

* Adressed feedback; fixed handling of same guid reconnects

* fixup! Adressed feedback; fixed handling of same guid reconnects

* merge the two joystick_lists into one

* make SDLJoystick a member of VirtualJoystick

* fixup! make SDLJoystick a member of VirtualJoystick

* fixup! make SDLJoystick a member of VirtualJoystick

* fixup! fixup! make SDLJoystick a member of VirtualJoystick

* SDLJoystick: Addressed review comments

* Address one missed review comment