Refactor: tools: Remove some nesting in crm_mon.c

Reorder things in a more logical way: initializations, then option
parsing, then output object setup, then checking args->version, etc.
That way, things are easier to read and we can de-nest the
"if (!args->version)" block.

Signed-off-by: Reid Wahl <nrwahl@protonmail.com>