cli: allow node operator to rollback last state (backport #7033)

[mergify]

This is an automatic backport of pull request #7033 done by Mergify.
Cherry-pick of 4ca130d has failed:

On branch mergify/bp/v0.34.x/pr-7033
Your branch is up to date with 'origin/v0.34.x'.

You are currently cherry-picking commit 4ca130d22.
  (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:
	new file:   cmd/tendermint/commands/rollback.go
	modified:   test/e2e/app/app.go

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   CHANGELOG_PENDING.md
	deleted by us:   cmd/tendermint/commands/reindex_event.go
	both modified:   cmd/tendermint/main.go
	both modified:   state/state.go
	added by them:   types/time/rollback.go
	added by them:   types/time/rollback_test.go

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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