Slimming down python packages

[GPropersi]

I broke the Python packages into three separate installation files -

1. requirements-prod.txt - Includes packages only needed to run the website
2. requirements-test.txt - Install all of prod and includes pytest for running CI actions testing. All GitHub Actions now use this file to install all packages up to testing
3. requirements-dev.txt - Install all of test and includes pre-commit for commit check - we should be using this one

As devs on this project, we should install requirements-dev.txt in a clean virtual environment, and ensure the following (after activating the virtual environment)

• [ ] That running pytest successfully runs and passes all tests. Run by typing in pytest after activating virtual environment
• [ ] After dropping the database, then run the server and ensure it allows you to perform all previous functions, such as register/login, email validation, forgot and reset password, and all associated functionality with UTubs/URLs/Tags/Members etc

To install the associated packages:

1. Run python -m venv venv (ensure you are using 3.11.2)
2. Activate the venv, depending on your OS. Your terminal should now start with (venv)
3. Run pip install -r requirements-dev.txt

[GPropersi]

Confirmed works on my Linux laptop and Macbook, as well as the GitHub Action runners.