feat: Bitmapfont add cachebuster & compress

[h1ve2]

BitmapFont (sdf/msdf)

• add cachebuster
• support mipmap
• add compress
• add support for cachebuster for existing BMFont #88
• use a custom configuration file for sdf/msdf.

Note: To be compatible with compress, the output file name has been changed to xxx.[png|webp|...].fnt. There should be no impact for projects using a manifest. If you need to use xxx.fnt by default, please let me know, and I will take the time to modify it so that xxx.fnt is used without compress.

cachebuster

compress

mipmap

split

replace the file of all pages in fnt

BMFont file

support .xml | .fnt mipmap is not supported

custom config

The font.charset in the JSON will be merged with the global font.charset, while other fields will be replaced by the JSON.

.json :

pipes :

output (fnt):

output (image):