feat: font generation from ttf (#882)

* 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

src/ObjCompiling.lua

@@ -15,6 +15,7 @@ end
 function ObjCompiling:link(links)
 	links:add(self:name())
 	links:linkto(minilzo)
+	links:linkto(stb)
 	links:linkto(Utils)
 	links:linkto(ObjCommon)
 	links:linkto(ObjLoading)
@@ -58,4 +59,5 @@ function ObjCompiling:project()
 		minilzo:include(includes)
 		Utils:include(includes)
 		json:include(includes)
+		stb:include(includes)
 end