feat: cancel button on shuttle form

Author: lemald

lib/arrow_web/live/shuttle_live/shuttle_live.ex

@@ -151,7 +151,18 @@ defmodule ArrowWeb.ShuttleViewLive do
         </div>
       </div>
       <:actions>
-        <.button class="btn-primary">Save Shuttle</.button>
+        <div class="w-25 mr-2">
+          <.button class="btn-primary w-100">Save Shuttle</.button>
+        </div>
+        <div class="w-25 mr-2">
+          <.link_button
+            href={~p"/shuttles"}
+            class="btn-outline-primary w-100"
+            data-confirm="Are you sure you want to cancel? All changes will be lost!"
+          >
+            Cancel
+          </.link_button>
+        </div>
       </:actions>
     </.simple_form>
     """