feat: add .focus() on components (#67)

Author: kai-gitt

src/Component.ts

@@ -98,6 +98,16 @@ export class Component<T extends HTMLElement = HTMLElement> extends ElementCompo
         return this.node.matches(selectors);
     }
 
+    /**
+     * Puts the element into
+     * {@link https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/focus focus}.
+     * @param options - An optional object for controlling aspects of the focusing process.
+     */
+    public focus(options?: FocusOptions): typeof this {
+        this.node.focus(options);
+        return this;
+    }
+
     /**
      * Set style property
      * @param name Property name