In `DebugLoginRegister` add a way to convert the a deprecated local account to a new one

[nazrinharris]

This doesn't need to be a full fledged feature, as this technically only applies to me.

[nazrinharris]

IIRC, the new account could either be:

1. Using the new bcrypt hashing for password
2. Using a new UserType

[nazrinharris]

I think I'll name the old PecuniaUser to be PecuniaUser V1, so that means the newer version would be PecuniaUser V2, which uses bcrypt for local password storage and introduces UserType.

If I'm correct, #154 introduced UserType and #146 introduced bcrypt.

• [ ] Add in wiki the changes in PecuniaUser

[nazrinharris]

So here's how the updating will go.

1. User chooses to update account
2. App first settles the UserType shenanigan, that is, it searches the local database to see if the current logged in user is a local user or not, and sets it accordingly.
3. Then, requests the user to reenter their password, so that a new hash can be made.

[nazrinharris]

Now that I've looked into it a little bit more, it seems like maybeMigratePecuniaUser is already handling the UserType shenanigan, all that's left is to handle the password

[nazrinharris]

Should be completed with 6926391 in #132