Port citra-emu/citra#4940: "Split Presentation thread from Render thread"

* Stub SetLcdBacklighOffEnabled

Used by Super Smash Bros. Ultimate
We require backlight services to be implemented to turn on/off the backlight.

* Address feedback

* shader: add FmulPostFactor LUT table

* shader: FMUL apply LUT

* Update src/video_core/engines/shader_bytecode.h

Co-Authored-By: Mat M. <mathew1800@gmail.com>

* nit: mistype

* clang-format & add missing import

* shader: remove post factor LUT.

* shader: move post factor LUT to function and fix incorrect order.

* clang-format

* shader: FMUL: add static to post factor LUT

* nit: typo

Co-authored-by: Mat M. <mathew1800@gmail.com>

shader: implement LOP3 fast replace for old function

InputCommon: analog_from_button get direction implementation

video_core/surface: Add R32_SINT render target format

video_core/gpu: Remove unused functions

texture: Implement R32I

texture_cache: Implement layered framebuffer attachments

vk_shader_decompiler: Implement Layer output attribute

surface_base: Implement texture buffer flushes

Kernel: Refactors and Implement a TimeManager and SchedulerLocks

audio_core: interpolate: Fix include for climits (Linux build break).

audio_core: Switch to a faster interpolation technique

shader/texture: Fix illegal 3D texture assert