Add Dark Mode, Password Hashing for better security , Settings Page, Policy PDF in Policy section,UI Changes

frontend/src/pages/Policy/Policy.jsx

@@ -1,11 +1,15 @@
-import React from 'react'
-
-function Policy() {
+const Policy = () => {
   return (
-    <div>
-      Policy
+    <div className="flex flex-col h-screen w-full bg-gray-100 dark:bg-google-dark">
+      <div className="flex-grow w-full h-full">
+        <iframe
+          src="https://svu-iqac.somaiya.edu/University+Policies/12.Travel+Policy.pdf"
+          className="w-full h-full border-none"
+          title="Travel Policy"
+        />
+      </div>
     </div>
-  )
-}
+  );
+};
 
-export default Policy
+export default Policy;