New documentation structure

[dsmits]

We should restructure to the following:

• Introduction
  • What is LARA
  • Unique design features of LARA suite
  • Architecture (role of components)
    • Pythonlab (language thing)
    • Orchestrator
    • Scheduler
    • SiLa connectors
    • Platform status db
• Quickstart (minimal setup)
• Starting template (adaptation template)
  • With docker
  • Without docker
• Pythonlab: defining your workflows and devices
  • what are processes
• Connecting (sila) devices
• Orchestrator:
  • How to run it
  • Features
  • Dashboard
• Scheduler:
  • How to run it
  • Features
• Platform status db
  • How to run it
  • Features
• Examples
• Existing Sila devices + wrappers