stellar#5412: included changelog on new ingest/cdp package

ingest/CHANGELOG.md

@@ -5,7 +5,8 @@ All notable changes to this project will be documented in this file. This projec
 ## Pending
 
 ### New Features
-* Create functional producer for `BufferedStorageBackend`. `PublishFromBufferedStorageBackend` is a new function which can be used to assist in developing streaming data pipelines from pre-computed `LedgerCloseMeta` on a `DataStore`. The stream can use `PublishFromBufferedStorageBackend` as the origin of `LedgerCloseMeta`, providing a callback function as the next operator in the stream, receiving the `LedgerCloseMeta`. [5462](https://github.com/stellar/go/pull/5462).
+* Create new package `ingest/cdp` for new components which will assist towards writing data transformation pipelines as part of [Composable Data Platform](https://stellar.org/blog/developers/composable-data-platform). 
+* Add new functional producer, `cdp.PublishFromBufferedStorageBackend`. A new function which enables a private instance of `BufferedStorageBackend` to perfrom the role of a producer operator in streaming pipeline designs.  It will emit pre-computed `LedgerCloseMeta` from a chosen `DataStore`. The stream can use `PublishFromBufferedStorageBackend` as the origin of `LedgerCloseMeta`, providing a callback function which acts as the next operator in the stream, receiving the `LedgerCloseMeta`. [5462](https://github.com/stellar/go/pull/5462).
 
 ### Stellar Core Protocol 21 Configuration Update:
 * BucketlistDB is now the default database for stellar-core, replacing the experimental option. As a result, the `EXPERIMENTAL_BUCKETLIST_DB` configuration parameter has been deprecated.