F insert auth

Summary

Allow the authorization of inserts.

Focus

The changes are mainly to the Cache. The (old) Crawler will not be able to use this.

Test Environment

unit and integration tests. see caosdb-crawler!34 (merged) for another integration test.

Check List for the Author

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• All automated tests pass
• Reference related issues
• Up-to-date CHANGELOG.md (or not necessary)
• Annotations in code (Gitlab comments)
  • Intent of new code
  • Problems with old code
  • Why this implementation?

Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md (or not necessary)
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
• Check: Are there specifications? Are they satisfied?

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CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased] ##
 
 ### Added ###
+- Unauthorized inserts can now be cached. Note, that the Crawler cannot 
+  postpone inserts. Only the Cache has now this ability.
 
 ### Changed ###