Extract jooq from core to make it easier to reuse in other projects

[proksch]

I have introduced several minor changes to make it easier to connect to the metadata DB from other projects without relying on core (which introduces a gazillion of transitive dependencies).

• Factor out the generated jooq code to a new module core-metadata
• Migrated the previously generated code to the core-metadata module, add core-metadata as a dependency to core
• Updated the jooq and postgres dependencies in core-metadata (apart from updates to the version literal in the generated code, the code did not change).

The PR also contains two minor, unrelated changes:

• Disable a test in the project that failed due to the non-availability of lima.ewi.tudelft.nl
• Remove the three failing workflows that were related to licensing

[ashkboos]

LGTM