Goverlay 0.3.7

Implemented load saved files in mangohud and vkbasalt
Fixes in missing libraries detection (thanks to stephanlachnit)
Default settings for FPS limit and VSYNC changed to "unset"
Fixed wrong font size in 4K preset
Removed debrand option in vkbasalt since it's deprecated on the original project
Fixed wrong font colors on the about page
Small tweaks in the UI