feat: add javascript mysql2 sample (#65)

.github/workflows/javascript.yml

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+name: JavaScript CI
+
+on:
+  push:
+    paths:
+      - '.github/workflows/javascript.yml'
+      - 'javascript/**'
+  pull_request:
+    paths:
+      - '.github/workflows/javascript.yml'
+      - 'javascript/**'
+
+jobs:
+  ci:
+    strategy:
+      matrix:
+        module:
+          - name: 'mysql2'
+            with_oceanbase_container: true
+    uses: ./.github/workflows/basic-workflow.yml
+    with:
+      language: 'javascript'
+      module: ${{ matrix.module.name }}
+      with_oceanbase_container: ${{ matrix.module.with_oceanbase_container }}

javascript/mysql2/README-CN.md

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+# javascript连接OceanBase 指南
+
+[English](README.md) | 简体中文
+
+本文介绍如何通过javascript连接 OceanBase 数据库。
+
+## 准备工作
+
+需要创建一个项目，确认nodejs,npm,mysql2已经安装安装。
+
+命令
+
+```
+mkdir example
+cd example
+npm init -y
+
+npm install mysql2
+
+```
+
+创建 [index.js](index.js) 文件
+
+```
+const mysql = require('mysql2');
+
+const connection = mysql.createConnection({
+  host: '127.0.0.1',  // OceanBase服务器地址
+  port: 2881,            // OceanBase端口
+  user: 'root',          // 数据库用户名
+  password: '',  // 数据库密码
+  database: 'test'    // 数据库名称
+});
+
+// 连接到数据库
+connection.connect(error => {
+  if (error) {
+    return console.error('连接到OceanBase数据库失败: ' + error.message);
+  }
+
+  console.log('成功连接到OceanBase数据库');
+
+  // 这里可以执行其他数据库操作
+
+  // 关闭连接
+  connection.end(err => {
+    if (err) {
+      return console.error('关闭数据库连接失败: ' + err.message);
+    }
+    console.log('关闭数据库连接成功');
+  });
+});
+```
+
+修改代码中的连接信息，之后你就可以直接使用命令行运行示例代码。
+
+```bash
+sh run.sh
+```

javascript/mysql2/README.md

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+# JavaScript Connection OceanBase Guide
+
+English | [简体中文](README-CN.md)
+
+This article introduces how to connect to the OceanBase database through JavaScript.
+
+## prepare
+
+We need to create a project to confirm nodejs, NPM, mysql2 has been installed and installed.
+
+command
+
+```
+mkdir example
+cd example
+npm init -y
+
+npm install mysql2
+
+```
+
+create [index.js](index.js) file
+
+```
+const mysql = require('mysql2');
+
+const connection = mysql.createConnection({
+  host: '127.0.0.1',  // OceanBase address
+  port: 2881,            // OceanBase port
+  user: 'root',          // username
+  password: '',  // passwd
+  database: 'test'    // database
+});
+
+// Connection OceanBase server
+connection.connect(error => {
+  if (error) {
+    return console.error('Connection OceanBase faild: ' + error.message);
+  }
+
+  console.log('Connection OceanBase Successd');
+
+  // Other Database Operations
+
+  // Close Connection
+  connection.end(err => {
+    if (err) {
+      return console.error('Close Connection Faild: ' + err.message);
+    }
+    console.log('Close Connection Successd');
+  });
+});
+```
+
+Modify the connection information in the code, and then you can directly run the example code using the command line.
+
+```bash
+sh run.sh
+```

javascript/mysql2/index.js

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+const mysql = require('mysql2');
+
+const connection = mysql.createConnection({
+  host: '127.0.0.1',  // OceanBase服务器地址
+  port: 2881,            // OceanBase端口
+  user: 'root',          // 数据库用户名
+  password: '',  // 数据库密码
+  database: 'test'    // 数据库名称
+});
+
+// 连接到数据库
+connection.connect(error => {
+  if (error) {
+    return console.error('连接到OceanBase数据库失败: ' + error.message);
+  }
+
+  console.log('成功连接到OceanBase数据库');
+
+  // 这里可以执行其他数据库操作
+
+  // 关闭连接
+  connection.end(err => {
+    if (err) {
+      return console.error('关闭数据库连接失败: ' + err.message);
+    }
+    console.log('关闭数据库连接成功');
+  });
+});

javascript/mysql2/run.sh

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+mkdir example
+cd example
+npm init -y
+
+npm install mysql2
+
+cp ../index.js ./
+node index.js