Transmogrifier improvements : Closes #5624, #5600, #5599, #5564

[cserf]

This PR is fixing multiple issues :

• Transmogrifier code restructuring. Cut the monolithic main function into smaller bits. Closes : https://github.com/rucio/rucio/issues/5624
• Support injection of delayed rules. Closes : https://github.com/rucio/rucio/issues/5600
• Overriding the subscription account if an account is specified into replication rules : Closes https://github.com/rucio/rucio/issues/5599
• Support of wildcard for argument copies to create as many copies of RSEs under a specific RSE expression : Closes : https://github.com/rucio/rucio/issues/5564
• Introduce tests that were missing for some functionalities (e.g. chained subscriptions)

[rcarpa]

The first commit is extremely difficult to review. It mixes new functionality; with code move; with refactoring; and code formatter visual changes.

[bari12]

I have to agree with Radu, this is very hard to review since it is really unclear what changed and what was just hit by the code formatter. Although we don't have a guideline/rule here, I find this "irregular" application of code formatters bothersome - this is a discussion we need to have. In any way, the application of the formatter should be broken into a separate commit.

[cserf]

Just to clarify. There is no additional code formatting in the 1st commit. The code was already formatted before (see https://github.com/rucio/rucio/commit/cbb5a31d1ad9dcb82aad65d4a2cbb628b9f7d779). This is just a massive restructuring of the code and there is nothing that is coming from black. Now I get the argument from Radu and next time I will try to do smaller changes.

[bari12]

Thanks Cedric, I will add it for 1.29.1

[bari12]

Please rebase this

[cserf]

@bari12 Code was rebased