~aleteoryx/lfm_embed

ref: 21ffaa07a20ccec702a77278724c6f78351a96f2 lfm_embed/src/theming d---------
Start of Lua support
Add SPDX info to all files
Theming refactor

Theming has been broken off into a seperate space, so that it'll be easier to add lua support later.