Enforce BMFF box nesting (backport #1794)

[mergify]

This is an automatic backport of pull request #1794 done by Mergify.
Cherry-pick of 8c64e9a has failed:

On branch mergify/bp/0.27-maintenance/pr-1794
Your branch is ahead of 'origin/0.27-maintenance' by 1 commit.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit 8c64e9ab.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   include/exiv2/bmffimage.hpp

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   src/bmffimage.cpp

Cherry-pick of 02d4ef2 has failed:

On branch mergify/bp/0.27-maintenance/pr-1794
Your branch is ahead of 'origin/0.27-maintenance' by 2 commits.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit 02d4ef2c.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   include/exiv2/bmffimage.hpp

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   src/bmffimage.cpp

Cherry-pick of 78e9c8a has failed:

On branch mergify/bp/0.27-maintenance/pr-1794
Your branch is ahead of 'origin/0.27-maintenance' by 3 commits.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit 78e9c8aa.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   src/bmffimage.cpp

no changes added to commit (use "git add" and/or "git commit -a")

Cherry-pick of 2d5cccd has failed:

On branch mergify/bp/0.27-maintenance/pr-1794
Your branch is ahead of 'origin/0.27-maintenance' by 4 commits.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit 2d5cccd4.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   fuzz/fuzz-read-print-write.cpp

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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