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/video_core/renderer_opengl/gl_state_tracker.cpp

@@ -214,10 +214,8 @@ void SetupDirtyMisc(Tables& tables) {
 
 } // Anonymous namespace
 
-StateTracker::StateTracker(Core::System& system) : system{system} {}
-
-void StateTracker::Initialize() {
-    auto& dirty = system.GPU().Maxwell3D().dirty;
+StateTracker::StateTracker(Tegra::GPU& gpu) : flags{gpu.Maxwell3D().dirty.flags} {
+    auto& dirty = gpu.Maxwell3D().dirty;
     auto& tables = dirty.tables;
     SetupDirtyRenderTargets(tables);
     SetupDirtyColorMasks(tables);