Completely replaces vcpkg with CPM for all "system" dependencies. Primarily needed for Android and Windows. Also uses my OpenSSL CI for those two platforms.
In theory, improves configure and build time by a LOT and makes things much easier to manage
Reviewed-on: #250
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Replaces every way of handling config for each frontend with SimpleIni. frontend_common's Config class is at the center where it saves and loads all of the cross-platform settings and provides a set of pure virtual functions for platform specific settings.
As a result of making config handling platform specific, several parts had to be moved to each platform's own config class or to other parts. Default keys were put in platform specific config classes and translatable strings for Qt were moved to shared_translation. Default hotkeys, default_theme, window geometry, and qt metatypes were moved to uisettings. Additionally, to reduce dependence on Qt, QStrings were converted to std::strings where applicable.
Completely removes code related to parsing the settings file on the java side. Now all settings are accessed via NativeConfig.kt and config.cpp has been modified to be closer to the core counterpart. Since the core currently uses QSettings, we can't remove reliance from Wini yet. This also includes simplifications to each settings interface to get closer to native code and prepare for per-game settings.
