Provide `bin/storage quickstart` to automate generation of `quickstart.sql`

Summary:
Ref T1191. Currently, the `quickstart.sql` gets generated in a pretty manual fashion. This is a pain, and will become more of a pain in the world of utf8mb4.

Provide a workflow which does upgrade + adjust + dump + destroy, then massages the output to produce a workable `quickstart.sql`.

Test Plan: Inspected output; I'll test this more throughly before actually generating a new quickstart, but that's some ways away.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T1191

Differential Revision: https://secure.phabricator.com/D10603