[adapters] 增加小游戏适配部分源码

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

@@ -0,0 +1,23 @@
+/* eslint-disable */
+const { screenWidth, screenHeight, devicePixelRatio } = swan.getSystemInfoSync
+    ? swan.getSystemInfoSync()
+    : { screenWidth: 0, screenHeight: 0, devicePixelRatio: 1}   // Mock data
+
+export const innerWidth = screenWidth
+export const innerHeight = screenHeight
+export { devicePixelRatio }
+export const screen = {
+    width: screenWidth,
+    height: screenHeight,
+    availWidth: innerWidth,
+    availHeight: innerHeight,
+    availLeft: 0,
+    availTop: 0,
+}
+export const scrollX = 0
+export const scrollY = 0
+export const ontouchstart = null
+export const ontouchmove = null
+export const ontouchend = null
+
+export { default as performance } from './performance'