Enable Creating Automations from Khoj

[debanjum]

Support Scheduling Automations #695

1. Detect when user intends to schedule a task, aka reminder
   • Support new reminder output mode to the response type chat actor
   • Show examples of selecting the reminder output mode to the response type chat actor
2. Extract schedule time (as cron timestring) and inferred query to run from user message
3. Use APScheduler to call chat with inferred query at scheduled time

Make Automations Persistent #714

• Make scheduled jobs persistent and work in multiple worker setups
• Add new operation Scheduled Job to Operation enum of ProcessLock

Add UX to Configure Scheduled Tasks #715

• Add section in settings page to view, delete your scheduled tasks
• Add API endpoints to get and delete user scheduled tasks

Make Automations more Robust. Improve UX #718

• Decouple Task Run from User Notification
• Make Scheduling more Robust
  • Use JSON mode to get parse-able output from chat model
  • Make timezone calculation programmatic on server instead of asking chat model
  • Use django-apscheduler to handle apscheduler and django interfacing
• Improve automation UX. Move it out into separate top level page
  • Allow creating, modifying automations from the automations page
  • Infer cron from natural language client side to avoid roundtrip