feat(sipi): add clean temp dir cronjob (DEV-2090)

[SamuelBoerlin]

Pull Request Checklist

Task Description/Number

Issue Number: DEV-2090

Basic Requirements

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• fix: represents bug fixes
• refactor: represents production code refactoring
• feat: represents a new feature
• docs: documentation changes (no production code change)
• chore: maintenance tasks (no production code change)
• test: all about tests: adding, refactoring tests (no production code change)
• other... Please describe:

Does this PR introduce a breaking change?

• Yes
• No
• Maybe (not 100% sure => check with FE)

Does this PR change client-test-data?

• Yes (don't forget to update the JS-LIB team about the change)
• No

[linear]

DEV-2090 Set up a cronjob to call the clean_temp_dir route regularly

The route requires basic auth and expects the credentials to be set with environment variables (CLEAN_TMP_DIR_USER and CLEAN_TMP_DIR_PW)

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.02 🎉

Comparison is base (82e53ee) 18.12% compared to head (db50ce4) 18.15%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2656      +/-   ##
==========================================
+ Coverage   18.12%   18.15%   +0.02%     
==========================================
  Files         277      277              
  Lines       28958    28958              
==========================================
+ Hits         5248     5256       +8     
+ Misses      23710    23702       -8     

Impacted Files	Coverage Δ
...la/org/knora/webapi/routing/v2/SearchRouteV2.scala	0.00% <0.00%> (ø)

... and 10 files with indirect coverage changes

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[irinaschubert]

The tests didn't run through. Would you like to have a look or should I?

[SamuelBoerlin]

Thanks!