include quest tile in index.rst

doc/source/index.rst

@@ -65,6 +65,20 @@ To further enhance data discovery, we have developed the QUEST module to facilit
         :text: Software Docs
         :classes: stretched-link btn-outline-primary btn-block
 
+    ---
+    :img-top: https://cdn-icons-png.flaticon.com/256/9585/9585915.png
+
+    **QUEST**
+    ^^^^^^^^^^^^^^
+
+    Query, Unify, Explore SpatioTemporal (QUEST) is a module that extends icepyx functionality to other
+    datasets.
+
+    .. link-button:: `/example_notebooks/QUEST_argo_data_access`
+        :type: ref
+        :text: Start your QUEST!
+        :classes: stretched-link btn-outline-primary btn-block
+
     ---
     :img-top: https://cdn-icons-png.flaticon.com/512/4230/4230997.png