~aleteoryx/lfm_embed

ref: d2c27e17897f80929d2ba5fed1055eade27a6b08 lfm_embed/src d---------
Custom font support complete
Add custom font support.
Remove redundant HTML escaping helpers.
fix typo in plain theme breaking light mode.
Create plain theme, do some escaping, fix some busted envvars, document themes.
lots of stuff. theming basically done, added some logging, frontend basically done.
pull down user info
fix packages, implement caching
API deserialization structs