Dino Bollinger authored Apr 10, 2022 and Richard Gobeille committed Apr 11, 2022

This provides menu access to the locale setting that was previously only
controllable through the "locale" console command. Languages can be defined
through the "localization" DEF token, and custom Unicode character tiles
through the "tilefont" DEF token.

Additionally:
- Selected locale is saved inside the eduke32 config file.
- Default language is set to "en" on launch, i.e. English.