Hope to split unpacking payload.bin and flashing into two steps

[inmaldrerah]

希望能够将解包和安装 payload.bin 的过程分离。具体地说，我希望能够解包生成某个文件（比如仅存储的 zip，其中包含所有分区的 img），然后安装 payload.bin 时使用该文件直接安装，而不需要在重启到 fastbootd 后等待解包。

I hope to split the unpacing payload.bin and flashing into two steps. To be specific, I hope a file of some format (e.g. a stored zip containing imgs of all partitions) can be generated without connecting to my phone, and flashing can be done with this file, rather than having to reboot to fastbootd and wait for the unpacking process.