Natives for getting how b-big resources are, nyu

[marrub--]

DGE_Point2I DGE_Font_GetTextSize(unsigned font, char const *text);
DGE_Point2I DGE_Texture_GetSize(unsigned texture);

for fonts just return the width of the biggest line and height * lines
for textures I need to add the width/height of textures to TextureData, at that point I can also make RenderThinkers default to rendering at that size (instead of 0x0 pixels)

[marrub--]

Done in 13ca43c and ebfd13f