feat: add commands for uploading blackvue/zip directories

[ptpt]

The current "upload" command handle many cases and it is getting complicated:

- upload video1.mp4 video2.mp4
- upload mly_tools_xxx.zip mly_tools_yyy.zip
- upload image_folder1 image_folder2

When it comes to uploading a folder, "upload" doesn't know if it's a folder of images or a folder of blackvues.

This PR adds two separate commands "upload_blackvue" and "upload_zip", while let "upload" focus on uploading a single directory of images:

- upload_blackvue blackvue_folder blackvue.mp4
- upload_zip zip_folder mly_tools_xxx.zip
- upload image_dir