Add LottieFiles motion-design skill

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0119deVM65AKpJiLTLhEdDg9

skills-lock.json

@@ -0,0 +1,11 @@
+{
+  "version": 1,
+  "skills": {
+    "motion-design": {
+      "source": "LottieFiles/motion-design-skill",
+      "sourceType": "github",
+      "skillPath": "skills/motion-design/SKILL.md",
+      "computedHash": "9fcf9130cc46ee8fd1d8e09a9263347a9d76efbcbfa46591cc4cefaf19bbb453"
+    }
+  }
+}