v2.0.0-beta.9

Small incremental release that mainly polishes the individual service descriptions

What's Changed

API LICENSE README.md aruna buf.gen.yaml buf.work.yaml setup.cfg setup.py [2.0.0 beta.9] Internal Relation DELETED / SetEndpointStatus by @St4NNi / @das-Abroxas in arunaengine/api#103

Changes in #103

• Add SetEndpointStatus to EndpointService, allowing the endpoint to set its own status
• Add InternalRelationVariant: DELETED signaling an belongs to relation to an object that got deleted
• Update comments and status of all services and RPCs, this mostly complements the existing comments and reworks some misleading existing ones.

Full Commit Log: arunaengine/api@v2.0.0-beta.8...v2.0.0-beta.9+pre