[Performance Analytics] Show the 'group/project'performance Table

User Story

1. As a user:

I want to see the Performance Table on the Performance Analytics page.

So that I can see the contributions of all project members under each metric.

2. As a user:

I want to export the Performance Table data to CSV file.

So that I can use the Performance data out of GitLab.

3. As a user:

I want to see the Performance Table data with the following title:

• 作者
• 代码提交次数
• 完成议题数
• 已合并的MR
• 新建议题数
• 新建MR
• 已核准的MR
• 已关闭的MR
• 评论数

4. As a user:

I want to sort the Performance Table data by each field.

So that I can see the result of each item in ascending and descending order.

Mockup