feat(api): Add api for getting a single subscription

[Tetrergeru]

Add handler in api to get single subsription by id. Only user with rights for subscription cah use this handler, others will get 403 Forbidden

[Tetrergeru]

/build

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 6.25000% with 15 lines in your changes are missing coverage. Please review.

Project coverage is 67.74%. Comparing base (da72678) to head (1769155).

❗ Current head 1769155 differs from pull request most recent head 41f78a3. Consider uploading reports for the commit 41f78a3 to get more accurate results

Files	Patch %	Lines
api/handler/subscription.go	10.00%	9 Missing ⚠️
api/controller/subscription.go	0.00%	6 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #998      +/-   ##
==========================================
- Coverage   67.82%   67.74%   -0.09%     
==========================================
  Files         208      208              
  Lines       11939    11955      +16     
==========================================
+ Hits         8098     8099       +1     
- Misses       3343     3358      +15     
  Partials      498      498              

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[github-actions]

Build and push Docker images with tag: 2024-03-13.6724bf7

[github-actions]

Build and push Docker images with tag: 2024-03-13.6724bf7