Updated Freoduo keymap

[FilipParyz]

Description

Update to the handwired split keyboard.

Types of Changes

• [ ] Core
• [ ] Bugfix
• [ ] New feature
• [ ] Enhancement/optimization
• [ ] Keyboard (addition or update)
• [x] Keymap/layout/userspace (addition or update)
• [ ] Documentation

Issues Fixed or Closed by This PR

Checklist

• [x] My code follows the code style of this project: C, Python
• [x] I have read the PR Checklist document and have made the appropriate changes.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [x] I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[FilipParyz]

I've simplified the keymap and removed the tri-layer completely. I don't need it 🤷‍♂️

Okay, I see there are some lint checks not passing as I don't have license headers included. I'll fix that.

[FilipParyz]

@drashna Hi, can I ask for a review? :)