feat(xo-server-netbox): rewrite

[pdonias]

Fixes #6038, Fixes #6135, Fixes #6024, Fixes #6036
See https://xcp-ng.org/forum/topic/6070
See xoa-support#5695
See https://xcp-ng.org/forum/topic/6149
See https://xcp-ng.org/forum/topic/6332

Screenshots

Description

Complete rewrite of the plugin. Main functional changes:

• Synchronize VM description
• Fix duplicated VMs in Netbox after disconnecting one pool
• Migrating a VM from one pool to another keeps VM data added manually
• Fix largest IP prefix being picked instead of smallest
• Fix synchronization not working if some pools are unavailable
• Better error messages

Checklist

• Commit
  • Title follows commit conventions
  • Reference the relevant issue (Fixes #007, See xoa-support#42, See https://...)
  • If bug fix, add Introduced by
• Changelog
  • If visible by XOA users, add changelog entry
  • Update "Packages to release" in CHANGELOG.unreleased.md
• PR
  • If UI changes, add screenshots
  • If not finished or not tested, open as Draft