Add file explorer to pack-interact workflow

[aemengo]

Summary

Adds a dive-style container layers explorer to --interactive mode, but delineated by buildpack

Output

Documentation

• Should this change be documented?
  • Yes, see #___
  • No
  • At some point

Related

Resolves #___

[dfreilich]

From a UX perspective, this is fabulous. I really appreciated how, even before you added in a toolbar for what commands are valid, that the colors of the buildpacks changed when you were able to select them. I thought that was a very nice signifier.

[aemengo]

@dfreilich You still had good feedback about showing a keymap - at least for Ctrl-C. I haven't forgotten; it will be addressed in a subsequent PR.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (main@52a3caa). Click here to learn what that means.
The diff coverage is 76.04%.

❗ Current head 32bafa1 differs from pull request most recent head 9d648bc. Consider uploading reports for the commit 9d648bc to get more accurate results

@@           Coverage Diff           @@
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  Coverage        ?   80.60%           
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  Files           ?      146           
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  Hits            ?     7684           
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Flag	Coverage Δ
os_linux	79.33% <76.04%> (?)
os_macos	76.70% <69.59%> (?)
os_windows	80.47% <76.04%> (?)
unit	80.60% <76.04%> (?)

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