Changes the GraphicsContext to be managed by the GPU core. This
eliminates the need for the frontends to fool around with tricky
MakeCurrent/DoneCurrent calls that are dependent on the settings (such
as async gpu option).

This also refactors out the need to use QWidget::fromWindowContainer as
that caused issues with focus and input handling. Now we use a regular
QWidget and just access the native windowHandle() directly.

Another change is removing the debug tool setting in FrameMailbox.
Instead of trying to block the frontend until a new frame is ready, the
core will now take over presentation and draw directly to the window if
the renderer detects that its hooked by NSight or RenderDoc

Lastly, since it was in the way, I removed ScopeAcquireWindowContext and
replaced it with a simple subclass in GraphicsContext that achieves the
same result

This commit disables the Boxcat backend by default for new users of yuzu.

There's several reasons as to why this is done:
1. Boxcat currently only actually has an impact on 3 games and doesn't influence any core mechanics of them
2. It causes a plethora of issues when enabled such as games like Crash Team Racing, Diablo 3 and Tales of Vesperia not booting at all or hanging
3. It causes https://github.com/yuzu-emu/yuzu/issues/2957 to happen. This makes the configuration menu totally unusable for many Linux users of yuzu

I think those points show that currently the negative impact of Boxcat outweighs its benefits and should therefore be disabled by default.
For users who are eager to use the extra features provided by it, they can still just turn it on in the settings.

Available as a drop down within the configure graphics tab.

Adds a Qt and SDL2 frontend for Vulkan. It also finishes the missing
bits on Vulkan initialization.

An implementation of the cemuhook motion/touch protocol, this adds the
ability for users to connect several different devices to citra to send
direct motion and touch data to citra.

Co-Authored-By: jroweboy <jroweboy@gmail.com>

GUI: rename and reorder themes

- We have some important audio settings, makes them more discoverable.

GUI/gamelist: add "None" as an option for second row and remove dynamically duplicate row options (#3309)

* GUI/gamelist: add "None" as an option for second row and remove duplicated row options

* fix clang-format warnings

MakeCurrent is a costly (according to Nsight's profiler it takes a tenth
of a millisecond to complete), and we don't have a reason to call it
because:
- Qt no longer signals a warning if it's not called
- yuzu no longer supports macOS

This was carried from Citra and wasn't really used on yuzu. It also adds
some runtime overhead. This commit removes it from yuzu's codebase.

With all of the trivial parts of the memory interface moved over, we can
get right into moving over the bits that are used.

Note that this does require the use of GetInstance from the global
system instance to be used within hle_ipc.cpp and the gdbstub. This is
fine for the time being, as they both already rely on the global system
instance in other functions. These will be removed in a change directed
at both of these respectively.

For now, it's sufficient, as it still accomplishes the goal of
de-globalizing the memory code.

* kernel: Replace usage of boost::intrusive_ptr with std::shared_ptr for kernel objects.

- See https://github.com/citra-emu/citra/pull/4710 for details.