Add initial graphics debugger interface.
citra-qt: Add GX command history viewer.
Rename LCD to GPU.
GPU: Cleanup register definitions.
video core: added PICA definitions file.
GPU debugger: Add functionality to inspect command lists.
citra-qt: Add command list view.
Refine command list debugging functionality and its qt interface.
Further refine GPU command list debugging.
Pica: Use some template magic to define register structures efficiently.