gl_rasterizer_cached: Implement RenderTargetFormat::B5G6R5_UNORM.

vector_math: Use variable template version of is_signed in Vec classes

gl_shader_decompiler: Stub input attribute Unknown_63.

Service/Account: stub LoadImage function

gl_shader_decompiler: Let OpenGL interpret floats.

maxwell_3d: Use correct const buffer size and check bounds.

nvhost_gpu: Don't over copy IoctlSubmitGpfifo.

gpu: Add R11G11B10_FLOAT to RenderTargetBytesPerPixel.

maxwell_to_gl: Implement VertexAttribute::Size::Size_8_8.

am: Stub SetScreenShotImageOrientation.

renderer_opengl: Use trace log in a few places.

Same behavior, less code

common: Convert type traits templates over to variable template versions where applicable

Add Icons and Metadata Support

vector_math: Minor cleanups

externals/CMakeLists: Add EXCLUDE_FROM_ALL to lz4's add_subdirectory() command

nvdrv: Get rid of global std::weak_ptr

externals: Update catch to 2.3.0

hle: Remove unused romfs.cpp/.h

acc: Add missing function table entries for GetUserCount

- Used by Super Mario Odyssey.

hid: fix IsSixAxisSensorAtRest() response

- Fixes mem corruption with Super Mario Odyssey and Pokkén Tournament DX.

- Used by Super Mario Odyssey.

- Accuracy is lost in translation to string, e.g. with NaN.
- Needed for Super Mario Odyssey.

- Used by Super Mario Odyssey.

Given this is stubbed within the common module in
5ac7b84, it should be added to the other relevant tables as well.

- Used by Pokken Tournament DX.

file_util: Avoid sign-conversions in WriteArray() and ReadArray()

Rather than use global state, we can simply pass the instance into the
NVFlinger instance directly.

Uses the C++17 inline variable variants