Preparation for moving to Gradle 7.0
- Improve Jakarta transformation handling (tests are also actually run now as a bonus);
- Improved CacheableHbmXmlTest to not write "ser" file to `${buildDir}/resources/test`
- Improved DatabaseService(Plugin)
- Update a number of plugins which did not handle up-to-date-ness properly
- fix path replacements (test bundles)
- drop inaccurate attempts to access javadoc/sources jar tasks and outputs for jakarta projects - they are not producing them (alternatively, and eventually will have to, we could have them produce those artifacts)
- skip jakarta modules for aggregated javadoc building