Add pure DOM passage

src/004-base/domPassage.js

+/**
+ * A pure DOM Passage, the SugarCube Wikifier never gets invoked.
+ */
+App.DomPassage = class extends Passage {
+	/**
+	 * @param {string} title
+	 * @param {function():DocumentFragment|function():HTMLElement} callback
+	 * @param {string[]} tags
+	 */
+	constructor(title, callback, tags = []) {
+		super(title, {
+			hasAttribute: a => a === "tags",
+			getAttribute: () => tags.join(" ")
+		});
+		this.callback = callback;
+
+		Story.add(this);
+	}
+
+	/**
+	 * @returns {DocumentFragment|HTMLElement}
+	 */
+	render() {
+		return this.callback();
+	}
+};