feat: drag account groups and separate grouped card rows

apps/web/src/group-order.ts

@@ -6,3 +6,12 @@ export function orderedGroups(groups: string[], order: string[] = []) {
 export function mergeGroupOrder(visible: string[], saved: string[]) {
   return [...visible, ...saved.filter((g) => !visible.includes(g))];
 }
+
+export function moveGroup(groups: string[], from: number, to: number) {
+  if (from === to || from < 0 || to < 0 || from >= groups.length || to >= groups.length)
+    return groups;
+  const next = [...groups],
+    [group] = next.splice(from, 1);
+  next.splice(to, 0, group);
+  return next;
+}