Feat/hook triggers

[lfbrehm]

This PR adds the last missing hook trigger HookStatusChanged and refactors permission handling for hook owners, so that their permissions are evaluated for any hook related action.

[codecov]

Codecov Report

Attention: 42 lines in your changes are missing coverage. Please review.

Comparison is base (ab50e1a) 50.45% compared to head (f56715a) 50.51%.
Report is 2 commits behind head on dev.

Files	Patch %	Lines
src/hooks/hook_handler.rs	0.00%	18 Missing ⚠️
src/middlelayer/hooks_db_handler.rs	0.00%	15 Missing ⚠️
src/caching/cache.rs	54.54%	5 Missing ⚠️
src/grpc/object.rs	0.00%	2 Missing ⚠️
src/middlelayer/update_db_handler.rs	66.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #139      +/-   ##
==========================================
+ Coverage   50.45%   50.51%   +0.05%     
==========================================
  Files          81       81              
  Lines       12976    12997      +21     
==========================================
+ Hits         6547     6565      +18     
- Misses       6429     6432       +3     

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[das-Abroxas]

lgtm.