chore: adds flake8 config file and cleans up linting

[esparr]

Pull Request Template

1. Targeted Issue

Add flake8 config file to remove unnecessary linting errors when running flake8

Ticket #128

2. Overview of Solution

• Adds .flake8 file to project to hold universal flake8 configurations.
• Removes redundant files for models.py, serializers.py and views.py
• Cleans up all lingering linting errors

3. Tools Used

flake8 configuration file
https://flake8.pycqa.org/en/latest/user/configuration.html

4. Testing Strategy

Ran flake8 in terminal
Saw it removed files in .flake8 config file so they are not linted

5. Future Implications

This lets us not have to visually ignore linting errors that do not need fixing. Devs can focus on what actually needs to be fixed.

6. Screenshots

Before:

After removing unnecessary files:

After fixing lingering linting errors:

7. Code Reviewers

@GitLukeW @Laura-D-Andrews

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Before you go...

• I have linked the relevant issue
• I have provided an overview of my solution
• I have shared the tools I've used
• I have outlined my testing strategy
• I have considered future implications of my changes
• I have included relevant screenshots
• I have kept my team in the loop

[GitLukeW]

Looks good and past test. Thank you again for the contribution!

Approved and Merged!