~aleteoryx/lfm_embed

ref: 7e4da5f0de16c35ce304620bd37b08d57ff46858 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