Flask-Script is Deprecated

[xuhang57]

https://github.com/smurfix/flask-script
And as mentioned here: #975
we need to figure out how to deal with Flask-Migrate

[xuhang57]

I believe you can use the flask CLI with Flask-Migrate as well:
https://flask-migrate.readthedocs.io/en/latest/

Not sure how to handle this yet.
Maybe rather than:

hil-admin db create which is essentially: cread_db() in hil.migrations
Should we do flask db init?

So, the question is, should we keep using flask-script so we can build a cli such as hil-admin or we should use flask cli instead.

[zenhack]

The flask command is just a wrapper on top of click. It would be nice to integrate hil-admin with that since we're using click for the hil command anyway.

It might be nice to keep a thin wrapper around it, just to set up a few things automatically and be a bit more intuitive to sysadmins who are not also python developers; I don't like to expose too much internal tooling goop.