This makes the formatting expectations more obvious (e.g. any zero padding specified
is padding that's entirely dedicated to the value being printed, not any pretty-printing
that also gets tacked on).

This makes clang-format useful on those.

Also add a bunch of forgotten transitive includes, which otherwise
prevented compilation.

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).

- added hooks to catch LCD IO read/writes

changed hw_lcd to use ARM core correct tick counter instead of [what was actually] just an instruction count. this seems to fix timing issues with the 3DS_Homebrew_Pong3Dv2 demo.