~aleteoryx/lfm_embed

ref: 41a5fa81b5c12feb8aab0ad82d42c135e93065f7 lfm_embed/src d---------
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