feat: include the official Dart MCP server in the list of MCP servers (#35)

Author: jorgecoca

.mcp.json

@@ -1,9 +1,17 @@
 {
   "mcpServers": {
+    "dart": {
+      "command": "dart",
+      "args": [
+        "mcp-server"
+      ]
+    },
     "very-good-cli": {
       "command": "very_good",
-      "args": ["mcp"],
+      "args": [
+        "mcp"
+      ],
       "env": {}
     }
   }
-}
+}