texture_cache: Use a table instead of switch for texture formats

Use a large flat array to look up texture formats. This allows us to
properly implement formats with different component types. It should
also be faster.

src/video_core/CMakeLists.txt

@@ -127,6 +127,8 @@ add_library(video_core STATIC
     shader/track.cpp
     surface.cpp
     surface.h
+    texture_cache/format_lookup_table.cpp
+    texture_cache/format_lookup_table.h
     texture_cache/surface_base.cpp
     texture_cache/surface_base.h
     texture_cache/surface_params.cpp