feat: BREAKING CHANGE - overhaul

[dsavell]

• Install Grav
• Install plugin function
• Mount grav/backup directory options
• Mount grav/user directory options
• Update plugins function
• Backup function
• Compile nginx config function
• Provide .env example file
• Fix scheduler not working in the admin UI.
• Add Nginx Logging & Grav logging.
• Support Grav Multisite
• Add support for ARM
• CI Pipeline
  • Add multi-arch support amd64,arm64
  • Add docker build cache to speed up docker build steps
  • Test for listening on port 80
  • Test for frontpage access
  • Test update plugins function
  • Test backup function
• Documentation
  • Setup
    • How to run with Docker Run
    • How to run with Docker Compose
    • Server Settings
    • Nginx Settings
    • Guides
      • How to update Grav
      • How to install plugins
      • How to update plugins

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