add lttstore migration warning

Author: ajgeiss0702

src/routes/(info)/lttstore/+layout.svelte

@@ -71,6 +71,10 @@
     </select>
   </div>
 </div>
+<div class="card border-2 mt-1 p-2 border-amber-600! bg-amber-600/21! limit-large mx-auto">
+  I am currently working on migrating the LTTStore database to support tracking both the US store and the Global store.
+  During this time, this site will probably be very broken, and possibly display incorrect data.
+</div>
 {@render children?.()}
 <br>
 <div class="p-4">