add alpinejs skill

public/skills.json

@@ -27,6 +27,10 @@
     "tags": ["knowledge"],
     "description": "I am comfortable working in an agile environment."
   },
+  {
+    "name": "Alpine.js",
+    "tags": ["js", "framework"]
+  },
   {
     "name": "Apache",
     "tags": ["framework"],