[adapters] 增加小游戏适配部分源码

adapters/platforms/baidu/wrapper/builtin/Event.js

@@ -0,0 +1,17 @@
+/* eslint-disable */
+import { noop } from './util/index.js'
+
+export default class Event {
+    constructor(type) {
+
+        this.cancelBubble = false
+        this.cancelable = false
+        this.target = null
+        this.currentTarget = null
+        this.preventDefault = noop
+        this.stopPropagation = noop
+
+        this.type = type
+        this.timeStamp = Date.now()
+    }
+}