Comms v3 Release

[hugoArregui]

• [x] Sync with WeMeta team
• [x] Implement /lambdas/hot-scenes and lambdas/realms for v3
• [x] ADR
• [x] Add new endpoints to API spec
• [x] peer count per parcel /stats/parcel - for v2 for DG
• [x] peer count per parcel /stats/parcel - for v3
• [x] /about
  • [x] add realm name
  • [x] add service version
  • [x] add bff.userCount
  • [x] hash for content
  • [x] hash for lambda
  • [x] move comms protocol inside comms
• [x] update catalyst-monitor
• [x] update catalyst-owner for v2
• [x] update catalyst-owner for v3
• [x] load balancer using /about
• [x] support for max peers for explorer realm selection
  • [x] Kernel: user /about for realm selection
• [x] implement /comms/* for v3