Add shortcuts to common npx commands

Co-authored-by: Iñaki Amatria Barral <inaki.amatria@appentra.com>

package.json

@@ -33,10 +33,11 @@
     "src/**"
   ],
   "scripts": {
+    "generate": "tree-sitter generate",
     "install": "node-gyp-build",
     "prestart": "tree-sitter build --wasm",
     "start": "tree-sitter playground",
-    "test": "node --test bindings/node/*_test.js"
+    "test": "tree-sitter test"
   },
   "dependencies": {
     "node-addon-api": "^7.1.0",