Get your devices.jason format as shown in server requirements and Pull Request at this link: https://github.com/ctosp/official_devices as below example
Example: ctosp/official_devices/master/whyred/devices.json
create a folder as shown in example and paste your generated changelog in changelog.txt then Pull Request at this link: https://github.com/ctosp/official_devices as below
Example: ctosp/official_devices/master/changelogs/whyred/changelog.txt