Refactor CDC Debezium Source

- Add AVRO format support. Defaults to JSON
 - Remove the Metadata repo configuration.
 - Remove the Spring property sort-cuts. Only the native Debezium properties are used.
 - change the native properties prefix from `cdc.config to cdc.debezium`.
 - Removes the need to fork and modify the Debezium engine code.
 - Add binding name strategy.

Remove old CDC projects and replace with the new implementation
Remove duplicate pom properties
remove non existing pom module
Rename `cdc-debezium-supplier/source` to `debezium-supplier/source`
streamline naming and tests
streamline supplier tests
test streamline. Github workflow
Fix Debezium engine generics mess
Break `DebeziumConfiguration` into engine auto-config and consumer configuration
add initial reactive consumer impl.
Splits Debezium into a pure supplier and a streaming source

  - Remove any SCS related dependencies from the supplier.
  - Supplier uses Sinks.Many.

complete the supplier vs source separation
Improve Debezium Egine auto-conf

 - Provide configuration hooks for OffsetCommitPolicy, ConnectorCallback,
   CompletionCallback and Clock with default implementations.
 - Remove obsolete code.

minor improvements
Rename cdc property prefix to `debezium` and `cdc.debezium` to `debezium.inner`
remove obsolete `StreamBridge` tests
address reviews. improve testing
Supplier tests. Rename `inner` to `properties`.
Streamline the README. Minor improvements
streamline supplier tests
final fixes

functions/function-dependencies/pom.xml

@@ -29,7 +29,7 @@
             </dependency>
             <dependency>
                 <groupId>org.springframework.cloud.fn</groupId>
-                <artifactId>cdc-debezium-supplier</artifactId>
+                <artifactId>debezium-supplier</artifactId>
                <version>${project.version}</version>
             </dependency>
             <dependency>