* Update Q0; Port Keychron Q0 Plus to VIAL
* Update VIAL UIDs for Q0 and Q0 Plus
* Remove `via` keymaps and mentions of `VIA_ENABLE = yes` for `keychron` keymaps for Q0 and Q0 Plus
* Update readme.md
* Add VIAL-specific flags for `vial` keymap
- Correct definition CONSTANT_CURRENT_STEP should be CKLED2001_CURRENT_TUNE
- Correct definition CAPS_LOCK_LED_INDEX should be NUM_LOCK_LED_INDEX
- Adjust the coordinates of RGB matrix slightly by reducing the size in half to enhance the color variations