[590] Add interfaces for CatalogSyncClient and CatalogSync

[vinishjail97]

Important Read

• Please ensure the GitHub issue is mentioned at the beginning of the PR

What is the purpose of the pull request

Add interface for CatalogSyncClient which allows syncing table format metadata to a catalog.
Add a new class CatalogSync syncs the canonical object (InternalTable) to multiple catalogs.
Introduce a new method getCurrentTable in the interface ConversionSource which extracts the latest table state and will be used when using CatalogSync

See RFC PR for more details about design and flow chart -> #605

Brief change log

(for example:)

• Add interface for CatalogSyncClient and CatalogSync
• Introduce getCurrentTable method in ConversionSource interface for catalog sync

Verify this pull request

(Please pick either of the following options)

This change added tests and can be verified as follows:

(example:)

• xtable-api/src/test/java/org/apache/xtable/spi/sync/TestCatalogSync.java
• xtable-api/src/test/java/org/apache/xtable/spi/sync/TestCatalogUtils.java
• xtable-core/src/test/java/org/apache/xtable/delta/ITDeltaConversionTargetSource.java#getCurrentTableTest
• xtable-core/src/test/java/org/apache/xtable/hudi/ITHudiConversionSourceSource.java#getCurrentTableTest
• xtable-core/src/test/java/org/apache/xtable/iceberg/ITIcebergConversionTargetSource.java#getCurrentTableTest