collection操作增加复制、移动和导出功能

[yessirpopesama]

1. Is your feature request related to a problem? Please describe. (这个功能是为解决什么问题) A clear and concise description of what the problem is. Explain your use case, context, and rationale behind this feature request (请尽可能详尽地说明这个需求的用例和场景) 1 编写测试样例的时候发现，collection需要大量复制修改的场合，没有复制和移动功能不太方便 2 希望能导出collection数据信息做备份

2. Describe the solution you'd like(请描述你期望的结果) A clear and concise description of what you want to happen (简单清楚的描述你期望的结果) 1 Project内的collection可以复制 2 collection可以移动到其他project, 便于归类 3 希望增加collection导出

3. Additional context (补充信息) Add any other context or screenshots about the feature request here (截图，链接等)

[brookshi]

嗯，现在collection这块的复制和转project是需要加强。 导出功能其实不必太在意，因为数据都在数据库里，数据库每天自动备份。