Fixes https://codeberg.org/forgejo/forgejo/issues/2257 Draft status of a PR is currently not exposed by the API. This PR adds a 'draft' field to pull requests in the API, which is used to correctly set the PR color/icon in a ContextPopup. --- Before: ![image](https://github.com/go-gitea/gitea/assets/5541521/72cbd30e-1175-4338-aa97-ac99c46c5118) After: ![image](https://github.com/go-gitea/gitea/assets/5541521/111c9eba-460e-4d57-bcca-23a151c3a4f1)