benchmark: support --help in CLI
This PR modifies the CLI for the benchmarking scripts to support a --help argument.
If any one of the arguments (including items) is --help, the help menu will be printed instead.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This PR modifies the CLI for the benchmarking scripts to support a --help argument.
If any one of the arguments (including items) is --help, the help menu will be printed instead.