deploy: redirect user to run if scenario was likely intent

[pinheadmz]

Catch a few likely confused user errors we saw during test today:

(.venv) --> warnet deploy resources/scenarios/miner_std.py
Usage: warnet deploy [OPTIONS] DIRECTORY [UNKNOWN_ARGS]...
Try 'warnet deploy --help' for help.

Error: Invalid value for 'DIRECTORY': 'resources/scenarios/miner_std.py' is not a valid directory.
Are you trying to run a scenario? See `warnet run --help`

(.venv) --> warnet deploy resources/networks/6_node_bitcoin/ --tank=miner
Usage: warnet deploy [OPTIONS] DIRECTORY [UNKNOWN_ARGS]...
Try 'warnet deploy --help' for help.

Error: Invalid value: Unknown args: ('--tank=miner',)
Are you trying to run a scenario? See `warnet run --help`