Added an idem exec and state module

[Akm0d]

What does this PR do?

fixes #57980
depends #57993

Adds an exec module and a state module for idem.
Idem execution modules and states can now be run through salt in a non-obtrusive way

Merge requirements satisfied?

• Docs
• Changelog - https://docs.saltstack.com/en/master/topics/development/changelog.html
• Tests written/updated

Commits signed with GPG?

Yes

[max-arnold]

If I understand this correctly, idem is asynchronous, right? How this would work with the planned Tornado upgrade where it is only possible to have a single event loop per thread?

[Akm0d]

If I understand this correctly, idem is asynchronous, right? How this would work with the planned Tornado upgrade where it is only possible to have a single event loop per thread?

This is executed in a separate process that is isolated from the original tornado loop

[max-arnold]

This is executed in a separate process that is isolated from the original tornado loop

Does idem start this process somewhere, or it is a minion worker process? (I'm mostly asking this to educate myself, feel free to ignore)

[max-arnold]

Can Salt run states and/or execution modules in the main thread that has an existing event loop?

[thatch45]

Since this is an execution module it will run inside of a worker process. Idem will run using the available loop that should be present when the worker is spun up.

[s0undt3ch]

Just a question about the context manager usage.

[waynew]

I'd really like to do a deeper dive here (and maybe get some of the other more experienced team to review as well). Maybe we could review during your Twitch stream on Monday? That way you could walk us through the changes, your thoughts, any questions that you had as you were putting this together, and maybe we'd come up with questions as well. Or it will all make perfect sense and everyone will be on board 😂

[s0undt3ch]

This now has conflicts