As part of #90752, we need to add CLI flags to the cockroach node decommission command to run the decommission pre-check validation. These should include commands to run the checks on their own (I.e. --checks-only) as well as to skip the checks (i.e. --no-checks). These flags should be incorporated into the client call for the decommission pre-check API implemented in #91568.

Jira issue: CRDB-21472