Add Riot Pad to VIA

[CheeseL0ver]

Description

Add support for the Riot Pad to VIA.

QMK Pull Request

qmk/qmk_firmware#22060

Checklist

• The VIA support for this keyboard is MERGED in QMK master already (MANDATORY)
• The VIA definition follows the guide here: https://caniusevia.com/docs/layouts
• I have a V3 JSON version for this keyboard definition.(MANDATORY)
• I have tested this keyboard definition using VIA's "Design" tab.
• I have tested this keyboard definition with firmware on a device.
• I have assigned alpha keys and modifier keys with the correct colors.
• The Vendor ID is not 0xFEED

[Xelus22]

v3/shandoncodes/riot_pad/riot_pad.json
should be
v3/riot_pad/riot_pad.json
(to reflect QMK tree)

[CheeseL0ver]

v3/shandoncodes/riot_pad/riot_pad.json should be v3/riot_pad/riot_pad.json (to reflect QMK tree)

Resolved. @Xelus22