Feat/nats improvements

[lfbrehm]

Summary

Adds missing event messages for server to server sync, additional bug fixes and improvements.

Changes

• Additional server only events for updating cached rules
• Missing emission of data proxy events in user_db_handler, workspace_db_handler and service_accounts_db_handler
• Fixed hook status in hook_handler
• Waiting for acknowledgement of specific proxies in workspace_db_handler and hooks_handler
• A lot of clippy suggestions

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 18.84615% with 422 lines in your changes are missing coverage. Please review.

Project coverage is 31.08%. Comparing base (7861bc2) to head (165955a). Report is 60 commits behind head on main.

:exclamation: Current head 165955a differs from pull request most recent head f2704f5. Consider uploading reports for the commit f2704f5 to get more accurate results

Files	Patch %	Lines
...ts/server/src/middlelayer/presigned_url_handler.rs	0.00%	73 Missing :warning:
...nents/data_proxy/src/caching/grpc_query_handler.rs	0.00%	67 Missing :warning:
...onents/server/src/caching/notifications_handler.rs	0.00%	40 Missing :warning:
components/server/src/hooks/hook_handler.rs	0.00%	35 Missing :warning:
...ver/src/middlelayer/service_accounts_db_handler.rs	0.00%	34 Missing :warning:
...mponents/server/src/notification/natsio_handler.rs	47.36%	20 Missing :warning:
...omponents/data_proxy/src/grpc_api/proxy_service.rs	0.00%	19 Missing :warning:
components/data_proxy/src/database/persistence.rs	0.00%	16 Missing :warning:
components/data_proxy/src/structs.rs	0.00%	13 Missing :warning:
components/server/src/database/dsls/rule_dsl.rs	7.14%	13 Missing :warning:
... and 22 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #171 +/- ## ========================================== + Coverage 30.72% 31.08% +0.35% ========================================== Files 127 127 Lines 24139 23854 -285 ========================================== - Hits 7416 7414 -2 + Misses 16723 16440 -283 ```

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[lfbrehm]

I tried to address the failing tests situation. Object::batch_create was the culprit, but I do not know why. Maybe this is related to this issue

[lfbrehm]

I refactored the slightly ugly solution to skip the inner loops in Object::batch_create and InternalRelation::batch_create, as suggested by @St4NNi. I'm not quite happy with removing the COPY FROM queries, because they are suggested by the tokio_postgres maintainer as a performance optimized solution. In the long run, this should be debugged, replacing this temporary solution.