* chore: add file variant of json fonts
* chore: add stb dependency
* feat: generate fonts from ttf files
* chore: add option to add yOffset to file font
* chore: dynamically adjust generated font bitmap size
* fix: printable characters should respect ISO-8859-1 control characters
* chore: do not write missing glyphs into the bitmap
* chore: remove test texture conversion
* chore: adjust font compiler for iw3,iw4,iw5,t4,t5
* chore: add possibility to fill color channels when converting
* fix: games other than t6 use rgba for fonts
* fix: make sure no mipmaps are set on loaddef
* fix: t4 and iw3 use dimensions in image loaddef
* chore: also include optional glyphs in fonts
