Compatibility with Akka.Persistence.Oracle

[to11mtm]

We do not have a configuration or a compatibility spec to work with Akka.Persistence.Oracle.

In theory, a user would be able to manually configure the tables with delete-compatibility-mode, but we should provide easy configuration and ideally provide unit tests.

Potential Challenges: I know nothing about the legal/liscensing implications of running Oracle in a CI for this.

[to11mtm]

I started a branch for this a while back: https://github.com/to11mtm/Akka.Persistence.Linq2Db-1/tree/oracle-support

Would require rebase and checking if we can use that docker image.