Adding pervasive column sorting

app/templates/admin/_imported_parts_table.html

@@ -11,6 +11,8 @@
           hx-target="#imported-parts-table-card"
           hx-trigger="input delay:300ms, change"
           hx-swap="outerHTML">
+      <input type="hidden" name="sort" value="{{ sort }}">
+      <input type="hidden" name="dir" value="{{ dir }}">
       <input type="text" name="description" placeholder="Filter by description…" value="{{ filter_description or '' }}">
     </form>
   </div>