nerdctl pull progress bars flashing during download

[l2dy]

What is the problem you're trying to solve

Pulling a image with many layers produces many lines of progress bars, which may occasionally flash as download progresses.

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Describe the solution you'd like

Provide a hint to the terminal emulator about how to draw atomically with synchronized updates escape sequences.

Additional context

More information about synchronized updates

Original proposal: https://gitlab.com/gnachman/iterm2/-/wikis/synchronized-updates-spec
Living document: https://gist.github.com/christianparpart/d8a62cc1ab659194337d73e399004036
Spec discussion: https://gitlab.freedesktop.org/terminal-wg/specifications/-/merge_requests/2

[AkihiroSuda]

Moved the issue from the nerdctl repo to the containerd repo, as the issue arises from the ctr code