Fix CI/CD: Add backend/package.json to repository

- Removed package.json from .gitignore (keep package-lock.json ignored)
- Added backend/package.json to git so CI/CD pipeline can build
- This fixes the 'ENOENT: no such file or directory' error in Kaniko build

.gitignore

@@ -1,4 +1,3 @@
 node_modules/
 package-lock.json
-package.json
 

backend/package.json

@@ -0,0 +1,17 @@
+{
+  "name": "oramap-backend",
+  "version": "1.0.0",
+  "description": "Ora Map Backend Server",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js",
+    "dev": "node server.js"
+  },
+  "keywords": ["map", "family", "leaflet", "express"],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.18.2",
+    "cors": "^2.8.5"
+  }
+}