[Other] Refactor js submodule (#415)

* Refactor js submodule

* Remove change-log

* Update ocr module

* Update ocr-detection module

* Update ocr-detection module

* Remove change-log

examples/application/js/package/packages/paddlejs-models/gesture/README.md

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+[中文版](./README_cn.md)
+
+# gesture
+
+gesture is a gesture recognition module, including two models: gesture_detect and gesture_rec. gesture_detect model is used to identify the palm area of the person in the image. gesture_rec model is used to recognize human gesture. The interface provided by the module is simple, users only need to pass in gesture images to get the results.
+
+<img src="https://img.shields.io/npm/v/@paddle-js-models/gesture?color=success" alt="version"> <img src="https://img.shields.io/bundlephobia/min/@paddle-js-models/gesture" alt="size"> <img src="https://img.shields.io/npm/dm/@paddle-js-models/gesture?color=orange" alt="downloads"> <img src="https://img.shields.io/npm/dt/@paddle-js-models/gesture" alt="downloads">
+
+# Usage
+
+```js
+
+import * as gesture from '@paddle-js-models/gesture';
+
+// Load gesture_detect model and gesture_rec model
+await gesture.load();
+
+// Get the image recognition results. The results include: palm frame coordinates and recognition results
+const res = await gesture.classify(img);
+
+```
+
+# Online experience
+
+https://paddlejs.baidu.com/gesture
+
+# Performance
+<img alt="gesture" src="https://user-images.githubusercontent.com/43414102/156379706-065a4f57-cc75-4457-857a-18619589492f.gif">