video_core: Remove all Core::System references in renderer

Now that the GPU is initialized when video backends are initialized,
it's no longer needed to query components once the game is running: it
can be done when yuzu is booting.

This allows us to pass components between constructors and in the
process remove all Core::System references in the video backend.

src/core/core.cpp

@@ -188,7 +188,6 @@ struct System::Impl {
         if (!gpu_core) {
             return ResultStatus::ErrorVideoCore;
         }
-        gpu_core->Renderer().Rasterizer().SetupDirtyFlags();
 
         is_powered_on = true;
         exit_lock = false;