Keeps the CPU-specific behavior from being spread throughout the main
System class. This will also act as the home to contain member functions
that perform operations on all cores. The reason for this being that the
following pattern is sort of prevalent throughout sections of the
codebase:

If clearing the instruction cache for all 4 cores is necessary:

Core::System::GetInstance().ArmInterface(0).ClearInstructionCache();
Core::System::GetInstance().ArmInterface(1).ClearInstructionCache();
Core::System::GetInstance().ArmInterface(2).ClearInstructionCache();
Core::System::GetInstance().ArmInterface(3).ClearInstructionCache();

This is kind of... well, silly to copy around whenever it's needed.
especially when it can be reduced down to a single line.

This change also puts the basics in place to begin "ungrafting" all of the
forwarding member functions from the System class that are used to
access CPU state or invoke CPU-specific behavior. As such, this change
itself makes no changes to the direct external interface of System. This
will be covered by another changeset.

Implemented Fast Layered Copy

common: Remove bit_set.h

kernel/handle_table: Minor changes

This is an analog of BitSet from Dolphin that was introduced to allow
iterating over a set of bits. Given it's currently unused, and given
that std::bitset exists, we can remove this. If it's ever needed in the
future it can be brought back.

These don't depend on class state, and are effectively implementation
details, so they can go into the cpp file .

The previous handle table size is a holdover from Citra. The actual
handle table construct on Horizon only allows for a maximum of 1024
entries.

We don't need to potentially inline the teardown logic of all of the
handle instances.

Use default values for unknown framebuffer pixel format

gl_shader_decompiler: Use UNIMPLEMENTED when applicable

am/applets: Minor cleanup

gl_shader_decompiler: Remove UNREACHABLE when setting RZ

common/math_util: Minor cleanup

common: Remove depencency on xbyak

Xbyak is currently entirely unused. Rather than carting it along, remove
it and get rid of a dependency. If it's ever needed in the future, then
it can be re-added (and likely be more up to date at that point in
time).

Gets rid of the need to use typename to access the ::type alias.

Allows objects that contain rectangle instances to be constexpr
constructible as well.

const/constexpr variables have internal linkage by default.

This hasn't been used since the project started, so we may as well get
rid of it to keep it from bit rotting.

maxwell_3d: Initialize rasterizer color mask registers as enabled.

am: Correct build failure

- Fixes rendering regression with Sonic Mania.

The interface for shared memory was changed, but another commit was
merged that relied on the (previously public) internals of SharedMemory.

This amends that discrepancy.

kernel/shared_memory: Make data members private, plus minor interface changes

ldr: Clean up error codes

kernel/process: Move <random> include to the cpp file

common/assert: Make the UNIMPLEMENTED macro properly assert

file_sys/card_image: Provide named members for the GamecardInfo struct

Fills out the struct according to information provided by SwitchBrew

Currently, there's no way to specify if an assertion should
conditionally occur due to unimplemented behavior. This is useful when
something is only partially implemented (e.g. due to ongoing RE work).
In particular, this would be useful within the graphics code.

The rationale behind this is it allows a dev to disable unimplemented
feature assertions (which can occur in an unrelated work area), while
still enabling regular assertions, which act as behavior guards for
conditions or states which must not occur. Previously, the only way a
dev could temporarily disable asserts, was to disable the regular
assertion macros, which has the downside of also disabling, well, the
regular assertions which hold more sanitizing value, as opposed to
unimplemented feature assertions.

Currently, this was only performing a logging call, which doesn't
actually invoke any assertion behavior. This is unlike
UNIMPLEMENTED_MSG, which *does* assert.

This makes the expected behavior uniform across both macros.

<random> isn't necesary directly within the header and can be placed in
the cpp file where its needed. Avoids propagating random generation
utilities via a header file.

The accessor should be doing just that, accessing, rather than retaining
the lifetime of the data broker as well.

Also resolve places where includes should have been provided, but
weren't.

Avoids wonky wrapping and makes it nicer to read.

am: Implement HLE software keyboard applet

lm: Implement SetDestination by doing nothing