Add more CLI feedback

[sjacks26]

Add more CLI feedback for users running any of the processes. Specifically, add prompts when invalid inputs are entered for language, location, API, network, etc.

[sjacks26]

We should also update the existing feedback in __main__.py to reduce the possibilities of errors and to alert users to possible simple errors (like capitalization or spaces). Or we could change the code in __main__.py to account for errors we might anticipate.

[sjacks26]

If we move the API prompt to before the terms prompt, we can add dynamic monitoring of terms for follow collections to make sure they appear valid.