Adds pre-commit linters

[ElPaisano]

Describe your changes

This PR adds a script (and its associated packages, configs, etc.) that runs automatically on local git commit and checks for:

• Invalid/ dead Markdown links
• Bad Markdown formatting
• Spelling errors
• Writing style

What issue(s) does this address?

• Set writing standards
• Minimize number of edits needed to be made to a PR
• Provide self service tools for contributors
• Scale editing process

How to test

1. Pull down this branch.
2. Make a change to a markdown file. Ideally, make an intentional error so that the full script is triggered.
3. git add the file
4. git commit -m -> This should trigger the script
5. Repeat steps 2-4 until the pre-commit check passes.