Enhance image history

[apostasie]

This fixes some of the issues described in #3019.

Specifically:

• implements the human flag
• display local dates
• implement CreatedAt
• enhances size display
• do not fail when format and quiet are passed together
• truncate snapshot unless quiet or no-trunc is passed

This PR stops using containerd/pkg/progress and instead goes directly to docker/go-units for better control.

Formatting was done in the image walker, and has been moved down to the printing part instead for better separation of concerns.

What is NOT fixed from #3019:

• any issue related to Id, or image lookup (still uses the walker for now)
• snapshot has been left untouched

[apostasie]

Hey folks @yankay @AkihiroSuda

• docs has been added for the --human flag
• added tests for image history overall

Pending CI happiness, let me know what you think and if you want some of that stuff modified.

[apostasie]

Ok, windows is going to give me grief again.

How do you folks test locally on windows?

Update: I do not understand how to pull a linux image on windows - for now, I have disabled the test on Windows then.

[apostasie]

@AkihiroSuda @yankay though all your comments have been addressed, this is currently blocked, as image history fails to inspect a non-native platform image (this should be a different bug, and this PR does not fix it) - thus making my newly introduced test fail.

I can weaken the test for now (eg: not checking CreatedAt) so that we can use a native image, and then when we fix this issue, we can reintroduce the more thorough test.

Thoughts?

[apostasie]

@AkihiroSuda @yankay I disabled the test on select platforms and CI is green.
PTAL at you convenience.

Thanks a lot for your help!

[yankay]

Thanks @apostasie

/lgtm

[apostasie]

Thanks @apostasie

/lgtm

Wondering if "/lgtm" with the slash does act as intended.
Merging still show as blocked.
Could you try with just "LGTM"?

Thanks a ton @yankay !

[AkihiroSuda]

Thanks