refactor!: finish parser migration

Finally! :)

This removes all code related to the old parser.

#65

lib/parser/classes/Button.js

@@ -0,0 +1,28 @@
+'use strict';
+
+const Text = require('./Text');
+const NavigationEndpoint = require('./NavigationEndpoint');
+
+class Button {
+  type = 'Button';
+
+  constructor(data) {
+    this.text = new Text(data.text).toString();
+
+    if (data.accessibility?.label) {
+      this.label = data.accessibility?.label;
+    }
+
+    if (data.tooltip) {
+      this.tooltip = data.tooltip;
+    }
+
+    if (data.icon?.iconType) {
+      this.iconType = data.icon?.iconType;
+    }
+
+    this.endpoint = new NavigationEndpoint(data.navigationEndpoint || data.serviceEndpoint || data.command);
+  }
+}
+
+module.exports = Button;