Add support for FreeType

[yellowberryHN]

This is an issue due to 2 factors:

• The font we are using only provides a few accents plus Cyrillic script
• The bitmap font rendering system that is being used is incompatible with higher range Unicode, as well as bitmap fonts being an outdated technology.

The way I propose implementing this is to implement the SDL2_ttf extension. That way, a traditional .TTF font can be used by the game to render all text. This will all improve localization efforts, because with the current system, we would need an incredibly massive amount of bitmap font sheets to cover Asian languages.

[Blueberryy]

This game engine definitely will need a Japanese localization.

[yellowberryHN]

As of ed37b24 we have basic FreeType rendering code, courtesy of https://github.com/ACBob/Bube. Still a work in progress, hope to be able to contribute back to that project.

[yellowberryHN]

The code previously implemented has been temporarily removed, as it has caused conflicts. It will be merged back into a future branch at a later date. I simply do not have the time to fix said conflicts at the moment.