yuzu: Move compatibility list specifics to their own source files

Lets us keep the generic portions of the compatibility list code
together, and allows us to introduce a type alias that makes it so we
don't need to type out a very long type declaration anymore, making the
immediate readability of some code better.

src/yuzu/CMakeLists.txt

@@ -9,6 +9,8 @@ add_executable(yuzu
     about_dialog.h
     bootmanager.cpp
     bootmanager.h
+    compatibility_list.cpp
+    compatibility_list.h
     configuration/config.cpp
     configuration/config.h
     configuration/configure_audio.cpp