HPCC-9976 Add banner support to new ECL Watch

Fixes HPCC-9976

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #4974 from GordonSmith/HPCC-9976

HPCC-9976 Add banner support to new ECL Watch

Reviewed-By: Miguel Vazquez <miguel.vazquez@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>