[Keyboard] Add SIRIND TOMAK

[eerraa]

[Keyboard] Add SIRIND TOMAK

Description

PCB for SIRIND TOMAK Ergonomics Split Keyboard powered by RP2040.

Types of Changes

• [ ] Core
• [ ] Bugfix
• [ ] New feature
• [ ] Enhancement/optimization
• [x] 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.
• [x] 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).

[waffle87]

Please do not close and open new PRs when your existing ones would have been fine to continue making changes to. This is now the third PR for this keyboard. (#23241, #22881)

[eerraa]

Thank you :)

[eerraa]

@fauxpark Could you please check if my correction is correct? Thank you!