feat(jans-auth-server): coderabbit - external services can provide generic script method executor which returns boolean value.

### Description

coderabbitai suggests to introduce generic script method executor which will help to reduce code.
It makes sense because many our methods follow same logic:
1. wrapped in try/catch
2. log entry and exit
3. throw web app exception if it's set

The only difference between them is input parameters and output.

### Test cases and code coverage

- [ ] Write unit test to cover added/changed code
- [ ] Update integration tests to cover added/changed code
- [ ] Documentation