Investigate use of Skupper for access to on premise databases [DBZ-2672]

Migrated from [DBZ-2672](https://issues.redhat.com/browse/DBZ-2672)

Skupper is a hybrid cloud service interconnect.  It provides overlay networking.  Once the overlay network is established, it is possible to connect into private edge sites.  This has potential for use with Debezium.

[https://skupper.io/]

https://github.com/skupperproject/skupper-example-postgresql

Start with the Skupper overview and the linked skupper-example-postgresql repository to understand the overlay-network approach for reaching private edge sites. Investigate whether this could support Debezium access to on-premise databases; done means documenting a clear feasibility conclusion and any required next steps.

Written by the indexing model from the issue text.