UX: Make the CLI easier to use 😋

[zFernand0]

Is your feature or enhancement request related to a problem or limitation? Please describe

Users may find it hard to find the right syntax for the commands that they want to issue.

> zowe help # this fails because it doesn't have the `--` in front
> zowe files listds SYS1.PARMLIB # this fails because of the invalid `listds` key
> zowe files list ds SYS1.PARMLIB -ru false # this fails because `-ru` gets split into `-r true -u false` 

Describe your enhancement idea

After some discussion with a few team members, we could:

1. Provide an interactive help approach (like manpage) when running zowe help
2. Provide an interactive approach to the commands (with tab auto-completion)
3. Provide examples under each option in the help and web-help, see picture below

Describe alternatives you've considered

N/A

Provide any additional context

Hopefully this helps visualize the enhancement idea about adding examples closer to the options (instead of at the bottom)

[github-actions]

Thank you for raising this enhancement request.
The community has 90 days to vote on it.
If the enhancement receives at least 5 upvotes, it is added to our development backlog.
If it receives fewer votes, the issue is closed.

[t1m0thyj]

$ zowe help
Command Error:
Command failed due to improper syntax
Unknown group: help
Did you mean: zftp?

Command entered: "help"
Use "zowe --help" to view groups, commands, and options.

Perhaps we could mention web help more prominently since it offers an easier way to browse example commands?
Use "zowe --help" or "zowe --help-web" to view groups, commands and options."