Clone a story into another project

https://ombulabs.atlassian.net/browse/DT-257

**Branch/Commit:**

Main branch

**Describe the feature:**

As a user, I want to be able to see a story from one project and clone it but into another project. There should be a `select` showing the current active projects and its subprojects.

**Problem:**

Currently, when we clone a story, the new story is added in the current project. Being able to clone a story picking a different project for the new story makes the feature more useful.

**I will abide by the [code of conduct](https://github.com/fastruby/points/blob/main/CODE_OF_CONDUCT.md)**

未指定文件或测试。首先定位现有的 story-cloning 流程以及 active projects 和 subprojects 的加载方式；然后跟踪 cloned story 的创建路径。完成的标准是：clone UI 提供可用的目标 projects 和 subprojects，并且新 story 创建在所选目标中，而不是当前 project 中。

由索引模型根据 Issue 内容生成。