Feature/7582

[Danthar]

Changes

Added a facility to provide your own supervision strategy that is used to govern the journal and snapshot-store plugins

This is a WIP. I need to probably add a configuration Spec, and some crash behavior tests at the very least.

Fixes #7582

Checklist

For significant changes, please ensure that the following have been completed (delete if not relevant):

• This change follows the Akka.NET API Compatibility Guidelines.
• This change follows the Akka.NET Wire Compatibility Guidelines.
• I have reviewed my own pull request.
• Design discussion issue Ability to specifically detect persistence journal and/or snapshot initialisation failures #7582
• Changes in public API reviewed, if any.
• I have added website documentation for this feature.

Latest dev Benchmarks

not relevant

This PR's Benchmarks

not relevant

[Danthar]

Although the way this supervision strategy configuration method will work. Sadly we dont enforce some kind of Init callback for our snapshot or journal implementations. If we did, we could force all implementations to handle their setup in there, stuff like initializing connections and whatnot. Then if that fails we could provide out of the box detection for init failures and use custom exceptions to explicitly communicate initialization failure.

But that would be a major breaking change for persistence plugin implementations.

[Arkatufus]

LGTM, waiting for the CI/CD to go through

[Aaronontheweb]

Well done @Danthar - ty for your contribution