Add a README to all subdirectories

[Elan456]

Description

Adds a README to each subdirectory to explain what belongs in each directory and the use of each tool.

Summary of Changes

• Adds a README to each subdirectory
• Changes documentation website styling to use Clemson colors for fun

Motivation

• Documentation is needed to support future development as the club continues.

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Testing

Check all that apply:

• I have added or modified tests to cover these changes.
• I have manually tested the changes on the target device(s) or environment(s).
• Existing tests were reviewed to ensure they still work as expected.
• If tests were not added or modified, explain why:

  Only READMEs and comments were added, so no tests needed

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Checklist

• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code where necessary for clarity.
• I have made corresponding updates to documentation (if applicable).