connector: add a debezium. prefix for CDC WITH OPTIONS

[xxchan]

          > CDC needs to pass many options directly to debezium

Do you mean that all unknown fields will be passed to Debezium? If so, it sounds terrible and we should introduce a common prefix for it, such as debezium. cc. @StrikeW

Originally posted by @fuyufjh in #13654 (comment)

[StrikeW]

To be clear, I agree to add a common debezium. prefix for properties that are not listed in our document (aka unknown fields) but provided by the underlying debezium connector. For example, right now our doc lists 8 property for the mysql-cdc connector (https://docs.risingwave.com/docs/current/ingest-from-mysql-cdc/). And user can pass debezium.snapshot.mode property to WITH to control the snapshot behavior of the debezium connector.

[github-actions]

This issue has been open for 60 days with no activity. Could you please update the status? Feel free to continue discussion or close as not planned.

[StrikeW]

unknown fields without the debezium. prefix will be ignored and would not pass to Debezium.

risingwave/java/connector-node/risingwave-connector-service/src/main/java/com/risingwave/connector/source/common/DbzConnectorConfig.java

Lines 73 to 85 in a397233

	private static Map<String, String> extractDebeziumProperties(
	Map<String, String> userProperties) {
	// retain only debezium properties if any
	var dbzProps = new HashMap<String, String>();
	for (var entry : userProperties.entrySet()) {
	var key = entry.getKey();
	if (key.startsWith(DBZ_PROPERTY_PREFIX)) {
	// remove the prefix
	dbzProps.put(key.substring(DBZ_PROPERTY_PREFIX.length()), entry.getValue());
	}
	}
	return dbzProps;
	}