Implement Pull #3528 from citra: use nvidia graphics automatically on laptops with optimus (with AMD support) (#271)

* Port 3528: use nvidia graphics automatically on laptops with optimus

* Force dedicated AMD Card for switchable Graphics

* Ran clang-format

nvflinger: Call MicroProfileFlip on NVFlinger::Compose.

GPU: Add support for the DXT23 and DXT45 compressed texture formats.

GPU: Implemented the B5G6R5 format.

* gl_shader_gen: Support vertical/horizontal viewport flipping.

* fixup! gl_shader_gen: Support vertical/horizontal viewport flipping.

GPU: Fixed the incorrect component order in ABGR8 textures.

For now only the UNORM type is supported.

GPU: Support non-tiled textures and configurable block height.

TODO: The way we handle cached formats must change, framebuffer and texture formats are too different to keep them in the same place.

Misc gpu improvements

Shader decompiler changes part 2

renderer_opengl: Implement BlendEquation and BlendFunc.

file_sys: Add HFS/PFS helper component

GPU: Implement some wrap modes