js,0.6或者1.0渲染精度 (#559)

* js,OCR摩拉

摩拉数值输出到本地，最后增加返回游戏界面

* js,精度切换

先就做这些

repo/js/切换画质/manifest.json

@@ -0,0 +1,13 @@
+{
+  "manifest_version": 1,
+  "name": "选择精度",
+  "version": "1.0",
+  "description": "暂时0.6或1.0精度切换",
+  "authors": [
+    {
+        "name": "吉吉喵"
+    }
+  ],
+  "settings_ui": "settings.json",
+  "main": "main.js"
+}