Add CLI "reset" command

[creativedrewy]

Sometimes running through the publishing process the local files will get in an invalid state. We should add a "reset" command that does the following:

• Warn the user that any previously minted addresses & files will be cleared out (but not removed from the wallet)
• Delete all asset manifest files
• Clear out addresses from config.yaml

[creativedrewy]

We should talk through the ramifications of this before doing so, though

[creativedrewy]

Closing in favor of other initiatives for the time being.