feature/cdc-support
[CBRD-23842] Support CDC interface (#2961)
http://jira.cubrid.org/browse/CBRD-23842
To support the CDC interface, the server must perform a series of tasks, such as 1. extracting record descriptors from log records, 2. interpreting the records into a schema, and 3. then converting these records into information that clients can use.
To specify the log record to interpret, and know additional information, supplemental log record type is added.
To parallelize the converting records into information and sending it to clients, cdc daemon thread is added.
Additionally implemented a client side API.