Set custom rules ID via @rule annotation

[fex01]

As posted in openHAB's community forum, I would like an option to replace the random auto-generated rule IDs with custom IDs defined by the user.

According to @CrazyIvan359 that should be possible (forum):

To anyone interested in adding this: there is a UUID validation function in utils.py already. You would need to add a parameter to the rule function and run that through the validator, accounting of course for it not being supplied or an invalid value being supplied.
I can add this but I don’t know when I will have time right now, but if someone submits a PR tested on OH2 and OH3 then I can pop over and approve it.

I just got started with Python in general and Jython rules in the specific - so it might take some time until I feel comfortable enough with the Helper-Libraries to contribute. But I'm not saying no 😅
But I would also not be sad if someone else solves that issue in the meantime 😁