Creates a vertical-ellipsis-menu component

app/webpacker/controllers/vertical_ellipsis_menu_controller.js

@@ -0,0 +1,21 @@
+import { Controller } from "stimulus";
+
+export default class extends Controller {
+  static targets = ["content"];
+
+  connect() {
+    super.connect();
+    window.addEventListener("click", (e) => {
+      if (this.element.contains(e.target)) return;
+      this.#hide();
+    });
+  }
+
+  toggle() {
+    this.contentTarget.classList.toggle("show");
+  }
+
+  #hide() {
+    this.contentTarget.classList.remove("show");
+  }
+}