add package.json

package.json

+{
+    "name": "mitfahrzentrale",
+    "version": "3.1.4",
+    "description": "",
+    "scripts": {
+        "dev": "webpack --watch --mode=\"development\"",
+        "prod": "webpack --mode=\"production\"",
+        "zip": "zip -r Mitfahrzentrale-V$npm_package_version.zip assets controllers migrations views Mitfahrzentrale.class.php plugin.manifest"
+    }
+}