curl --request POST \
  --url https://gogs.example.com/api/v1/repos/{owner}/{repo}/labels \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "color": "<string>"
}
'

{
  "id": 123,
  "name": "<string>",
  "color": "<string>",
  "url": "<string>"
}