AI Generated Lua + Sequence Description, Name, and Color

[roryaronson]

• [x] Add new FarmBot API endpoint (/api/ai?) that acts as a prompt builder and proxy to OpenAI’s chat APIs.
• [x] Add magic wand buttons into sequence header, sequence description header, and Lua block header.
• [x] Move edit sequence description button to sequence description header.
• [x] Add prompt input field and GENERATE button to Lua block.
• [x] Add new field to the user model for user's LANGUAGE.
• [ ] Server-side cache a concatenation of all page content under https://developer.farm.bot/v15/lua/functions/
• [x] Build prompts according to mockup and connect to various magic wand buttons.

Mockup.pdf