COMMON: Move CalculateFrameStats to GraphicsManagerBase
COMMON: Pass deltaTime to DrawFrame

This will be used for CalculateFrameStats as well as in the future it could
be used for blending between GameState ticks
LIGHTING_DEMO: Calculate frame stats every frame
LIGHTING_DEMO: Add TweakBar values for fps and frame time
LIGHTING_DEMO: Add wireframe toggling
LIGHTING_DEMO: Break TweakBar values into two bars