NIFI-12825: implemented ListHBaseRegions processor

[emiliosetiadarma]

Summary

NIFI-12825

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  • JDK 21

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[mattyb149]

+1 LGTM, verified with ListHBaseRegions and ScanHBase, table had 3 regions and I got 3 FlowFiles out with the correct rowkeys. Thanks for the new feature! Merging to main (this may be able to be backported but I'm only merging to main for now)