Add marketplace file

.claude-plugin/marketplace.json

@@ -0,0 +1,22 @@
+{
+    "name": "runescape",
+    "owner": {
+        "name": "Sam Myers",
+        "email": "samuel.myers@protonmail.com"
+    },
+    "metadata": {
+        "description": "RuneScape Tools",
+        "version": "1.0.0"
+    },
+    "plugins": [
+        {
+            "name": "wiki",
+            "source": "./plugins/rsw",
+            "description": "RuneScape Wiki CLI",
+            "version": "1.0.0",
+            "author": {
+                "name": "Sam Myers"
+            }
+        }
+    ]
+}