Blob commands UX revisit

In the process of developing the blob commands, there are comments that the UX can be improved.

For example: #1137 (comment)

Hence, creating this issue to track all such discussions. Any related change would need to start with the CLI spec.

[FeynmanZhou]

Hi @Two-Hearts , is your private build still up-to-date? or should I build and test blob signing from the main branch? https://github.com/Two-Hearts/notation/releases/tag/v2.0.0-blobregistry

Hi @Two-Hearts , is your private build still up-to-date? or should I build and test blob signing from the main branch? https://github.com/Two-Hearts/notation/releases/tag/v2.0.0-blobregistry

@FeynmanZhou It still works, but based on our recent discussions, we believe this is not the path we are going? You could find @yizha1's proposal here: https://github.com/notaryproject/notation/blob/main/specs/proposals/blob-signing.md

#1137 (comment)