These are holdovers from Citra and can be removed.

Now that nothing actually touches the internal page table aside from the
memory subsystem itself, we can remove the accessor to it.

Given the page table will always be guaranteed to be that of whatever
the current process is, we no longer need to keep this around.

Centralizes the page table switching to one spot, rather than making
calling code deal with it everywhere.

Keeps the return type consistent with the function name. While we're at
it, we can also reduce the amount of boilerplate involved with handling
these by using structured bindings.

Returns the same type that the function name describes.

- Fixes graphical issues with Chocobo's Mystery Dungeon EVERY BUDDY!
- Fixes a crash with Mario Tennis Aces

We can just use .at(), which essentially does the same thing, but with
less code.

Given we already ensure nothing can set the zeroth register in
SetRegister(), we don't need to check if the index is zero and special
case it. We can just access the register normally, since it's already
going to be zero.

We can also replace the assertion with .at() to perform the equivalent
behavior inline as part of the API.

Given this doesn't actually alter internal state, this can be made a
const member function.

Now, since we have a const qualified variant of GetPointer(), we can put
it to use in ReadBlock() to retrieve the source pointer that is passed
into memcpy.

Now block reading may be done from a const context.

Allows retrieving read-only pointers from a const context externally.

This doesn't modify internal state, so it can be made a const member
function.

This doesn't modify any internal state, so it can be made a const member
function to allow its use in const contexts.

- Use QStringLiteral where applicable.

- Use const where applicable

- Remove unnecessary precondition check (we already assert the pixbuf
  being non null)

We can utilize qOverload with the signal connections to make the
function deducing a little less ugly.

Fills in the missing surface types that were marked as unknown. The
order corresponds with the TextureFormat enum within
video_core/texture.h.

We also don't need to all of these strings as translatable (only the
first string, as it's an English word).

Since c5d41fd8 callback parameters were
changed to use an s64 to represent late cycles instead of an int, so
this was causing a truncation warning to occur here. Changing it to s64
is sufficient to silence the warning.

These aren't used externally by anything, so they can be made private
data members.

Replaces header inclusions with forward declarations where applicable
and also removes unused headers within the cpp file. This reduces a few
more dependencies on core/memory.h

This is a hold over from the 3DS error codes in Citra.

BitField has been trivially copyable since
e99a1486, so we can eliminate these
TODO comments and use ReadObject() directly instead of memcpying the
data.

Makes the return type consistently uniform (like the intrinsics we're
wrapping). This also conveniently silences a truncation warning within
the kernel multi_level_queue.

enum class elements from the same enum can already be compared against
one another without the need for explicitly defined comparison
operators.

The given string instance doesn't need to be copied entirely, we can
just use a view instead.

Passing around a 64 byte data struct by value is kind of wasteful,
instead pass a reference to the struct.

The unknown member here is actually padding due to being passed as a
struct. We can do the same, and remove the need to pop a padding word.

I realized that I updated the documentation on SwitchBrew a while ago,
but never actually updated the structs within yuzu.

Rather than make a full copy of the path, we can just use a string view
and truncate the viewed portion of the string instead of creating a totally
new truncated string.

Temporal generally indicates a relation to time, but this is just
creating a temporary, so this isn't really an accurate name for what the
function is actually doing.

TXQ returns integer types. Shaders usually do:

R0 = TXQ(); // => int
R0 = static_cast<float>(R0);

If we don't treat it as an integer, it will cast a binary float value as
float - resulting in a corrupted number.

In several places, we have request parsers where there's nothing to
really parse, simply because the HLE function in question operates on
buffers. In these cases we can just remove these instances altogether.

In the other cases, we can retrieve the relevant members from the parser
and at least log them out, giving them some use.

Applies the override specifier where applicable. In the case of
destructors that are  defaulted in their definition, they can
simply be removed.

This also removes the unnecessary inclusions being done in audin_u and
audrec_u, given their close proximity.

Quite a few unused includes have built up over time, particularly on
core/memory.h. Removing these includes means the source files including
those files will no longer need to be rebuilt if they're changed, making
compilation slightly faster in this scenario.