feat!: bring back the cliff vesting command (#111) (backport #271)

[mergify]

This is an automatic backport of pull request #271 done by Mergify.
Cherry-pick of bf5b163 has failed:

On branch mergify/bp/v0.45.0x-osmo-v7/pr-271
Your branch is up to date with 'origin/v0.45.0x-osmo-v7'.

You are currently cherry-picking commit bf5b16352.
  (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:   x/auth/vesting/client/cli/tx.go

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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