Submit a new device request support → https://www.home-assistant.io/integrations/zha#how-to-add-support-for-new-and-unsupported-devices → Issues · zigpy/zha-device-handlers · GitHub
However in this case I think the best might probably to also ask ZHA/zigpy developers here → https://github.com/zigpy/zigpy/discussions
and maybe also contribute to related discussion → https://github.com/zigpy/zigpy/discussions/857
Also consider voting for that feature request → https://community.home-assistant.io/t/zigbee-device-provisioning-by-scanning-qr-code-qr-camera-scanner-in-zhas-ui-config-and-companion-apps-to-include-new-zigbee-3-0-devices-to-home-assistants-zha-integration/231185/4