Create stat command

[nmassey001]

Create a command that will list all the requests for a user and / or group workspace.

Use click to create the command line interface.

Follow the protocol of writing a separate function for:

1. Interpret the command line arguments
2. Make the request to NLDS
3. Process the request return
4. Print the processed results

1 Is just writing the click functionality at the top of the function
2 Has already been written: get_request_status in publishers/status.py
3 Means filtering the results based on the return values: e.g. filter by start and end date, or file version / date
4 Should be able to print to the terminal or provide a JSON dump of the filtered results.

It would be good to have some common print function, I think.

See the work you already did in nlds_utils/nlds_monitor

[Will-Cross1]

Completed in #4