vfs: Replace cstr concat with char concat

host_memory: mmap changes for virtual_base

Update translations (2023-01-01)

settings: warn on invalid regon/language combinations

Specify that we do not require swap to be reserved for this address range;
allow overcommitting.

ci: Allow setting clang-format binary

core: hid: emulated_console: Avoid a crash if frontend does not configure touch_from_button_maps.

CMake: make more features optional

config: Save multiplayer settings only globally

Saved multiplayer settings like the nickname, remote address, etc. were reset everytime a game was booted up and the game-specific config files were loaded, as these values will never be set.