## QMK Pull Request
## Checklist
- [x ] The VIA support for this keyboard is **MERGED** in QMK master already **(MANDATORY)**
- [x ] VIA keymap is **MERGED** in VIA userspace master already **(MANDATORY)**
- [x ] The VIA definition follows the guide here: https://caniusevia.com/docs/layouts
- [x ] I have a V3 JSON version for this keyboard definition.**(MANDATORY)**
- [x ] I have formatted the JSON file to have consistent formatting with the rest of the repository.
- [x ] I have tested this keyboard definition using VIA's "Design" tab.
- [x ] I have tested this keyboard definition with firmware on a device.
- [x ] I have assigned alpha keys and modifier keys with the correct colors.
- [x ] The Vendor ID is not `0xFEED`
Description
Add buff75 VIA