RSDK-9452 - require logged in status for module generation

[stuqdog]

The current state of the CLI is, for all* commands except for viam module generate, to error out pretty much immediately if the user is not logged in, with a "please run viam login" message. viam module generate, however, will do much of the work happily even if not logged in (e.g., it will run all the user prompting and take in inputs), and then only at the last moment will it try to log in. The behavior after login is inconsistent, however. While I have had no problems with the job successfully logging in and completing, @felixreichenbach, @stevebriskin, and @npentrel have all had issues where the job then failed and had to be rerun. This is a frustrating case because there is non-trivial time and work done in the steps leading up to that failure (e.g., filling out all the user prompts) that all needs to be repeated.

As a first pass solution, this PR brings viam module generate in line with other CLI actions by immediately checking if we're logged in and returning an error if not. As a follow-up, we have a ticket to revisit the ensureLoggedIn logic to try to create more generalized consistency in the direction of not erroring out when possible but instead trying to log in and then proceed with the requested action.

*I haven't tested everything so I might be mistaken when I say all, but at any rate it's very close to all.

[purplenicole730]

I didn't even realize this was a problem because I always used the flags. Thanks for catching this and fixing it, and organizing efforts for the future work as well!