Generic filter parameter for the REST findAll interfaces

[dnlkoch]

Description

This suggests to introduce a generic filter parameter for the REST (GET /) interfaces based on the JSONPath specification.

TODOs

• integration tests for all endpoints, actually for /applications only
• check count queries, they need to include the permission check (I assume)
• more detailed swagger description (if needed)

Related issues or pull requests

Pull request type

• Bugfix
• Feature
• Dependency updates
• Tests
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe)

Do you introduce a breaking change?

• Yes
• No

Checklist

• I understand and agree that the changes in this PR will be licensed under the
  Apache Licence Version 2.0.
• I have followed the guidelines for contributing.
• The proposed change fits to the content of the code of conduct.
• I have added or updated tests and documentation, and the test suite passes (run mvn test locally).
• I have added a screenshot/screencast to illustrate the visual output of my update.

[github-actions]

license-eye has totally checked 412 files.

Valid	Invalid	Ignored	Fixed
294	1	117	0

Click to see the invalid file list

• shogun-lib/src/test/java/de/terrestris/shogun/lib/util/JsonPathFilterUtilTest.java

[LukasLohoff]

Nice!