我有一个放肆无礼大胆的想法，多网盘空间合并

### Please make sure of the following things

- [x] I have read the [documentation](https://alist.nn.ci).
- [x] I'm sure there are no duplicate issues or discussions.
- [x] I'm sure this feature is not implemented.
- [x] I'm sure it's a reasonable and popular requirement.

### Description of the feature / 需求描述

有没有一种可能，将网盘 A 与网盘 B 的空间合并，融合成一个虚拟盘 C，拥有 A+B 的容量

### Suggested solution / 实现思路

_No response_

### Additional context / 附件

_No response_