feat: add package.json with Express, node-fetch, dotenv dependencies

package.json

@@ -0,0 +1,17 @@
+{
+  "name": "immich-frame",
+  "version": "1.0.0",
+  "description": "A lightweight digital photo frame web app for Immich",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js"
+  },
+  "dependencies": {
+    "express": "^4.21.0",
+    "node-fetch": "^2.7.0",
+    "dotenv": "^16.4.5"
+  },
+  "engines": {
+    "node": ">=18"
+  }
+}