vk_rasterizer: Match OpenGL's FlushAndInvalidate behavior

Match OpenGL's behavior. This can fix or simplify bisecting issues on
Vulkan.

Frontend: Remove tracking for context wrapper

audio_renderer: Better voice mixing and 6 channel downmixing

Improve time zone support

shader_ir: Add separate instructions for ordered and unordered comparisons and fix NE on GLSL

vk_graphics_pipeline: Implement rasterizer_enable on Vulkan

Stub hid:SendKeyboardLockKeyEvent

Supersedes #3738 and #3321

Needed for Puchikon 4 SmileBASIC 1.0.0

CI: Don't check clang format on early access builds

"Not equal" operators on GLSL seem to behave as unordered when we expect
an ordered comparison.

Manually emulate this checking for LGE values (numbers, not-NaNs).

externals: Cmake version checks

texture: Implement R8G8UI

This allows us to use native SPIR-V instructions without having to
manually check for NAN.

maxwell_to_vk: implement missing signed int formats

* Remove git submodules that will be loaded through conan

* Move custom Find modules to their own folder

* Use conan for downloading missing external dependencies

* CI: Change the yuzu source folder user to the user that the containers run on

* Attempt to remove dirty mingw build hack

* Install conan on the msvc build

* Only set release build type when using not using multi config generator

* Re-add qt bundled to workaround an issue with conan qt not downloading prebuilt binaries

* Add workaround for submodules that use legacy CMAKE variables

* Re-add USE_BUNDLED_QT on the msvc build bot

video_core: Implement viewport swizzles with NV_viewport_swizzle

hle_ipc: Eliminate core memory globals

vk_sampler_cache: Use VK_EXT_custom_border_color when available

Port citra-emu/citra#5280: "Small fixes to "Option to hide mouse on inactivity""

Co-Authored-By: Vitor K <vitor-k@users.noreply.github.com>

GPU: More optimizations to GPU Command List Processing and DMA Copy Optimizations

kernel/memory: Resolve several compiler warnings