[rocketmq-connect] Synchronize data from Mysql to Redis

1. Please describe the feature you are requesting.
Synchronize data from Mysql to Redis
1. Support multiple data structures
1. string
2. hash
2. Support field exclusion
{"user":"1","userName":"laohu","userType":"one"}
{"user":"1","userName":"laohu"}
3. combination key
1. {userId}_{userType}
4. Multiple commands can be executed at one time

The issue names the rocketmq-connect component but no files, tests, or entry points. Start by locating the connector implementation and its existing source and sink handling, then determine where MySQL-to-Redis synchronization belongs. Done means supporting string and hash structures, field exclusion, combination keys, and multiple commands as specified.

Written by the indexing model from the issue text.