Create an admin user from environment variables in migration

[AdrianDAlessandro]

Description

This PR adds a data migration that creates an admin user based off environment variables. This will mean we can create admin users on the production server.

Some details:

• If the username and email already exist in one user, that user is given admin access
• If the username or email is present, but not in the same user, an error is logged and nothing changes in the database
• If the username and email do not exist, a new admin user is created
• A random password is assign to the new user, they can create a password with the "lost password" functionality
• There is no tests for this for two reasons: migrations are extremely difficult to test, and this should only be run once, after that an admin user will exist and user accounts can be managed via that access.

Fixes #635

Type of change

• Documentation (non-breaking change that adds or improves the documentation)
• New feature (non-breaking change which adds functionality)
• Optimization (non-breaking, back-end change that speeds up the code)
• Technical work (non-breaking, change which is work as part of a new feature)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (whatever its nature)

Key checklist

• All tests pass (eg. python -m pytest)
• The documentation builds and looks OK (eg. mkdocs serve)
• Pre-commit hooks run successfully (eg. pre-commit run --all-files)

Further checks

• Code is commented, particularly in hard-to-understand areas
• Tests added or an issue has been opened to tackle that in the future. (Indicate issue here: # (issue))

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 17 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
main/migrations/0024_create_admin_user.py	50.00%	17 Missing ⚠️

📢 Thoughts on this report? Let us know!

[Sahil590]

Works for me

[Sahil590]

I can see there is no password set ENV will it just send an email prompting them to set up one?

[AdrianDAlessandro]

I can see there is no password set will it just send an email prompting them to setup one?

When they first go to sign in, they can use the "Lost password?" link to get an email for creating a new one. This will likely be me or @davehorsfall for the production server