Add CiTrace recording support.

This is exposed in the GUI as a new "CiTrace Recording" widget.

Playback is implemented by a standalone 3DS homebrew application (which only runs reliably within Citra currently; on an actual 3DS it will often crash still).

src/citra_qt/CMakeLists.txt

@@ -12,6 +12,7 @@ set(SRCS
             debugger/graphics_breakpoints.cpp
             debugger/graphics_cmdlists.cpp
             debugger/graphics_framebuffer.cpp
+            debugger/graphics_tracing.cpp
             debugger/graphics_vertex_shader.cpp
             debugger/profiler.cpp
             debugger/ramview.cpp
@@ -35,6 +36,7 @@ set(HEADERS
             debugger/graphics_breakpoints_p.h
             debugger/graphics_cmdlists.h
             debugger/graphics_framebuffer.h
+            debugger/graphics_tracing.h
             debugger/graphics_vertex_shader.h
             debugger/profiler.h
             debugger/ramview.h