update package.json

Author: MaxNumerique

package.json

@@ -7,7 +7,9 @@
     "ogw-generate-schemas": "./generate_schemas.js"
   },
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "npm run json",
+    "build": "npm run json",
+    "json": "node generate_schemas.js"
   },
   "dependencies": {
     "glob": "^11.0.3"