Add ActiveDirectory navigation and group management pages

- Added new ActiveDirectory section in the navigation bar (`navbar.html`) with expandable options.
- Implemented `GroupReview.php` for reviewing AD group details and tiering.
- Implemented `GroupSearch.php` for searching and displaying AD group memberships with autocomplete functionality.
- Fixed incorrect link in `index.php` pointing to `AD-Detail.php`.

navbar.html

@@ -102,6 +102,16 @@
         </li>
       </ul>
     </li>
+    <li>
+      <a href="#AD" data-bs-toggle="collapse" class="nav-link px-0 align-middle">
+        <i class="fs-6 bi bi-people text-white"></i> <span class="ms-1 d-none d-sm-inline text-white h7">ActiveDirectory</span><i class="bi bi-caret-down"></i> </a>
+      <ul class="collapse nav flex-column ms-1" id="AD" data-bs-parent="#menu">
+        <li class="w-100">
+          <a href="/AD/GroupReview.php" class="nav-link px-0" target="_blank"> <span class="d-none d-sm-inline text-white h7">- Group Review</span></a>
+          <a href="/AD/GroupSearch.php" class="nav-link px-0" target="_blank"> <span class="d-none d-sm-inline text-white h7">- Group Membership</span></a>
+        </li>
+      </ul>
+    </li>
     <br>
     <br>
     <li>