Adding waffling80 hotswap PCB

[4pplet]

Description

Adding support for waffling80 hotswap, a open source h88/h87 TKL PCB: https://github.com/4pplet/waffling80 (hotswap version not yet added to readme)

Types of Changes

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

Checklist

• My code follows the code style of this project: C, Python
• 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.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[4pplet]

Any updates on this? I believe it should be ready for merge