Properly Implemented TXQ Instruction

nvhost_ctrl_gpu: Implement IoctlGetGpuTime.

debug_pad: Avoid loading input for nonexistent buttons (Home and Screenshot)

Prevents memory exceptions when the debug pad is enabled.

maxwell_3d: Implement alternate blend equations.

audout_u: Add support for multiple IAudioOut streams.

macro_interpreter: Implement AddWithCarry and SubtractWithBorrow.

- Used by Undertale.

- Used by Undertale.

- Used by Undertale.

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

- Used by Undertale.

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