[xCluster] Move xcluster code out of CatalogManager

[hari90]

Jira Link: DB-8519

Description

Move xCluster related master logic out of CatalogManager.

• Cleanup redundant code [xCluster] Code cleanup on master part 1 #19353
• Create XClusterManager [xCluster] Code cleanup on master part 1 #19353
• Test Cleanup [xCluster] Code cleanup on master part 1 #19353
• [xCluster] Move xCluster CatalogEntities out of CatalogManager #19713
• [xCluster] Cleanup usage of ProducerId and ReplicationGroupId in proto files and docs #19825
• [xCluster] Move retained_by_xcluster_ out of CatalogManager #21325
• [xCluster] Unify xCluster Stream creation #22343
• [xCluster] Move xCluster tests out of cdcsdk_ysql-test.cc #22335
• Move xCluster Bootstrap related code out of CatalogManager
• Move NS replication related code out of CatalogManager
• Move ReplicationGroup related code out of CatalogManager

Issue Type

kind/enhancement

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