Add basic list menu elements and fix alwaysToggle to only trigger if the popup is open.

tp-popup-menu.js

@@ -0,0 +1,35 @@
+/**
+@license
+Copyright (c) 2024 trading_peter
+This program is available under Apache License Version 2.0
+*/
+
+import { LitElement, html, css } from 'lit';
+
+class TpPopupMenu extends LitElement {
+  static get styles() {
+    return [
+      css`
+        :host {
+          display: block;
+        }
+
+        .wrap {
+          min-width: 120px;
+          padding: 6px 0;
+          border-radius: 2px;
+        }
+      `
+    ];
+  }
+
+  render() {
+    return html`
+      <div class="wrap">
+        <slot></slot>
+      </div>
+    `;
+  }
+}
+
+window.customElements.define('tp-popup-menu', TpPopupMenu);