Add GitHub Copilot handoff skill to Claude Code (mlflow#19991)

Signed-off-by: harupy <[email protected]>
Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: harupy <[email protected]>
Co-authored-by: Claude <[email protected]>

Author: 3 people

.claude/skills/copilot/SKILL.md

@@ -0,0 +1,16 @@
+---
+name: copilot
+description: Hand off a task to GitHub Copilot.
+allowed-tools:
+  - Bash(gh agent-task create:*)
+---
+
+## Examples
+
+```bash
+# Create a task with an inline description
+gh agent-task create "<task description>"
+
+# Create a task from a markdown file
+gh agent-task create -F task-desc.md
+```