Add double tap action (#3879)

* add dbltap_action

* apply to picture-glance

* types and boolean

* fix typo

* simplify double tap logic

* extract hasDoubleClick functionality

* address comments

* address comments

* double_tap_action

gallery/src/demos/demo-util-long-press.ts

@@ -12,7 +12,7 @@ export class DemoUtilLongPress extends LitElement {
         () => html`
           <ha-card>
             <mwc-button
-              @ha-click="${this._handleTap}"
+              @ha-click="${this._handleClick}"
               @ha-hold="${this._handleHold}"
               .longPress="${longPress()}"
             >
@@ -28,7 +28,7 @@ export class DemoUtilLongPress extends LitElement {
     `;
   }
 
-  private _handleTap(ev: Event) {
+  private _handleClick(ev: Event) {
     this._addValue(ev, "tap");
   }