Regexrouter support update delete

[FreCap]

This MR implements a similar support to changing topics/schemas like in the JDBCSinkConnector + regexRouter
e.g. https://stackoverflow.com/a/55290401

Example to move all tables from a schema to another.
Slightly different code can be used to change names to tables.

   schema_mapping = { "original" : "new_bq_dataset" }

    for (from_schema, to_schema) in schema_mapping.items():
        transformer_name = f"schemaMapping_{from_schema}"
        config_json.update({
            "transforms": config_json['transforms'] + "," + transformer_name,
            #  extracting the table name
            f"transforms.{transformer_name}.type": "org.apache.kafka.connect.transforms.RegexRouter",
            f"transforms.{transformer_name}.regex": f"^[^.]+\\.{from_schema}\\.(.*)",
            #    "transforms.route.regex": "([^.]+)\\.([^.]+)\\.([^.]+)",

            # using the `:` as divisor as the dataset from the topic name
            # if the topic is in the form <dataset>:<tableName>.
            f"transforms.{transformer_name}.replacement": to_schema + ":$1",
        })