HPCC-10900 Provide a list of all superkeys associated with a query

Allow user to view list of superkeys associated with a query within the U/I.

Signed-off by: Miguel Vazquez <miguel.vazquez@lexisnexis.com>
Merge pull request #5656 from miguelvazq/SuperKeys

HPCC-10900 Provide a list of all superkeys associated with a query

Reviewed-By: Gordon Smith <gordon.smith@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>