feature: toggle field

src/Field/ToggleField.php

+<?php
+
+namespace WPDesk\Forms\Field;
+
+class ToggleField extends CheckboxField {
+
+	public function __construct() {
+		$this->add_class( 'wpd-toggle-field' );
+	}
+
+	public function get_template_name(): string {
+		return 'input-toggle';
+	}
+}