Fix new database creation in V4 logic

This addresses a bug in database migration / creation logic if the database does not already exist.

Break The Shackles & Clone Me

• Role names no longer need to match between Discord and TS. /syncrole now requires a string name of the discord role.
• A user may now register more than on TSID to their discord user and all will be synchronised at the same time.

UPGRADE WARNING
This upgrade changes the structure of the database used to store identities and synchronized roles! It will take a backup before performing the schema upgrade but you should take a manual copy of your database first just to be sure!!

Silent Bots

Made all commands ephemeral so that only the user issuing it can see the reply.

v2

Added ability to use 3rd party site re-direct (baseClientURL) with OAuth
Added ability to disable OAuth entirely and use new /register command instead.
Minor bugfixes.

Initial Release

The application works at this point.

MVP:

Discord bot
OAuth discord login from Teamspeak
Connect Teamspeak & Dsicord User Identities
Choose discord roles to synchronize
Sync roles when they're assigned or removed
Sync roles when the TS user connects
Command to manually sync
Command to manually connect TS and Discord users.