Add command pack manifest remove to remove a manifest list

[jjbustamante]

Context

We've been working on the idea to add multi-arch support on CNB. A mentorship project was created on LFX and this feature is part of the efforts to build the Minimal Viable Product (MVP) during the program duration.

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Description

Delete one or more manifest lists from local storage

Proposed solution

A new feature on Pack can be implemented to help our users. The feature is inspired by the similar functionality in docker or podman

Usage:  pack manifest remove [manifest-list] [manifest-list...]

Delete one or more manifest lists from local storage

Describe alternatives you've considered

Additional context

• This feature should be documented somewhere