citra-qt: Move graphics debugging code into its own folder

Keeps all graphics debugging stuff from cluttering up the root debugger
folder

VideoCore: Make profiling scope more representative

citra-qt: Move bits of constructor behavior to named functions

Use GL_TRUE when setting color_mask

Makes the initialization process a tad easier to grok,
since the constructor isn't just a glob of random unrelated behaviors.

VideoCore: Inline IsPicaTracing

Fixed game_list focus issue.

Revert "Memory: Always flush whole pages from surface cache"

Code cleanup

added line render_window->setFocus();

Thread: remove the thread from the thread list when exiting

Misc. Shader refactors

Copy SDL2.dll when compiling citra-qt with msvc

gdbstub: const correctness changes

game_list: Add a context menu with "Open Save Location"  option

Kernel: remove object's waiting thread if it is dead

Also uses size_t as the length indicator type, as is common with buffers.

Threading: Reworked the way our scheduler works.

Common: Fix gcc build on macOS

Fix debug build from #2249

gdbstub: Remove global variable from public interface

Service/CECD: Add cecd:ndm service

hid: Get rid of a double -> float truncation warning