added eslint script and git precommit hook

Author: Hitansh159

package.json

@@ -21,7 +21,8 @@
     "serverstartWin": "SET DEBUG=api:* && npm run devstart",
     "test": "NODE_OPTIONS=--experimental-vm-modules npx jest",
     "test:watch": "NODE_OPTIONS=--experimental-vm-modules npx jest --watch",
-    "test:openHandels": "NODE_OPTIONS=--experimental-vm-modules npx jest --detectOpenHandles"
+    "test:openHandels": "NODE_OPTIONS=--experimental-vm-modules npx jest --detectOpenHandles",
+    "eslint": "eslint '**/*.js'" 
   },
   "dependencies": {
     "bcrypt": "^5.1.0",