Use Clortho to securely save credentials for patch uploads

[morganestes]

When a patch is uploaded, the user is prompted for the username and password each time before uploading to a ticket. This will save the credentials in the system store and only prompt for the username for each upload.

Alternatively, we could store the username in a config file and not prompt for it each time, but asking for it each time probably isn't that horrible.

See #37.

[aaronjorbin]

😍 Thanks @morganestes What OS have you tested on this so far?

[morganestes]

Just on macOS for now. I need to install a Windows VM to test it there, and I can test Linux inside VVV.

[aaronjorbin]

https://www.npmjs.com/package/keytar seems like it might be a better choice since it's actively developed while Clortho seems to be somewhat forgoten.