Prevent window flickering when holding Esc

ci: Don't fetch submodules when fetching PRs

hotkeys: Don't allow hotkeys to spam

Reported on discord by Levlight. Don't try to exit fullscreen if it's already off.

Project A.R.T. Advanced Rendering Techniques

CMakeLists: Update catch to 2.13.7

Keeps the testing libraries up to date.

Texture Cahe/Shader decompiler: Resize PointSize on rescaling, refactor and make reaper more agressive on 4Gb GPUs.

Fixes Bayonetta 2 on AMD