try to build custom adbd
In the present, the workflow downloads the whole AOSP source, which is unnecessary for adbd building. I will try to make it only download sources required by adbd. Maybe implement in the next update.
目前这个工作流会下载整个aosp源码，但是adbd编译只需要其中的一小部分。所以，未来将尝试只让他下载adbd必需的源码。大概下一次更新就能实现了吧
Android source branch name | 安卓各版本源码分支名