outdated doc: missing document for upsert protobuf and upsert bytes

[neverchanje]

Where the document should be updated:
https://docs.risingwave.com/ingestion/supported-sources-and-formats

The current documentation only covers Upsert JSON and Upsert Avro, but it lacks guides for Upsert Protobuf and Upsert Bytes.

Upsert protobuf:

Last update can be found in risingwavelabs/risingwave#11047

FORMAT UPSERT
ENCODE PROTOBUF (
   schema.location = 'location' | schema.registry = 'schema_registry_url [, ...]',
)

Similar to upsert-avro, user can specify the encoding as protobuf.

Upsert bytes

While upsert bytes does not use the same syntax as other upsert formats, user can implement the same semantic with the include key as clause and specifying the Kafka key as the primary key.

CREATE TABLE t (
	data BYTEA, PRIMARY KEY (rw_key)
) INCLUDE key AS rw_key
WITH ( ... )
FORMAT PLAIN ENCODE BYTES 

Additional Suggestion:

I suggest further dividing the source formats catalog into 3 main types:

• Append-only
  • Avro
  • JSON
  • Protobuf
  • Bytes
• Upsert
  • Upsert Avro, JSON and Protobuf
  • Upsert Bytes
• CDC
  • Debezium AVRO
  • Canal JSON
  • Debezium JSON
  • Debezium MongoDB JSON
  • Maxwell JSON