Add failure message template

.github/templates/repo-workflow-fail.md

@@ -0,0 +1,7 @@
+### Workflow Failure ❌
+
+Unfortunately, the workflow to create the model repo has failed. View the logs here for more information:
+
+🔗 [Workflow logs]({{ workflow_url }})
+
+You may need to delete the following repo that was created via this workflow run since the run was not fully successful: [ModelAtlasofTheEarth/{{ repo_name }}](https://github.com/ModelAtlasofTheEarth/{{ repo_name }})