Add more prompts

[Munksgaard]

We'd like to support at least the following (from Inquirer):

• Confirm (Added in 7092180)
• Input (Tracking PR Add input method #10)
• Password
• Checkbox (Tracking issue Support checkbox #11)
• @killercup's proposal from Shortcuts for choices #2 (perhaps as another function, in order to enable both types of prompts).