Allow --cicsPlex and --cicsRegion to be optional when creating a profile

[Joe-Winchester]

When a CICS profile is created you need to specify a --region-name (if it's an SMSS managed region) and also a --cicsPlex if it's part of a plex

These can be queried, which means that it's possible to just connect to host:port and then return the scope/region for SMSS and also the CICSPlexnames if the plex isn't specified.

Feature request

Allow an SMSS connection to not have to specify the --region-name
Allow a CICS Plex connection likewise to have the plex name as optional. Also add the ability to get the plexes, e.g. zowe cics get CICSPlexes

Also, when you are connected to plex there is no reason to set a --region-name scope as you can retrieve all of the regions for a plex.

zowe cics get resource CICSCICSplexList

This should work, however it fails because it insists that a regionname is added which is actually invalid

[zFernand0]

Multi-enhancement request:

• Allow an SMSS connection to not have to specify the --region-name
• Allow a CICS Plex connection likewise to have the plex name as optional.
  This will allow zowe cics get resource CICSCICSplexList to work properly

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[zFernand0]

Added the keep labels since this is a good first issue 😋