sample application for debezium FSM

[zenyui]

Is your feature request related to a problem? Please describe.
Create a sample project using COS as a FSM to unpack debezium events

Describe the solution you'd like
a docker-compose sample that runs a postgres DB, debezium, kafka, and COS

[Tochemey]

@zenyui I don't think this issue is related to the open source version. Need more explanation.

[zenyui]

@zenyui I don't think this issue is related to the open source version. Need more explanation.

It came up in an open-sourcing meeting as a great use case for COS (converting debezium topics into a nice, nested struct via COS). It solves a common, hard problem, so it's worth demonstrating as a sample app.