[CLI] Versions are compared as strings

Problem

Node versions are compared as strings (e.g.https://github.com/couchbase/couchbase-cli/blob/32eaa392a47eea421719240432455fa81b1dd7b2/cbmgr.py#L4417C39-L4417C60). This will break when server versions >10 are released e.g. when compared as strings "10.0.0" < "7.6.0". This will lead to the version checks not working.

Fix

Don't compare versions as strings. Either convert the version string to a new custom type with custom comparators as soon as the endpoint is called, or create a function that takes 2 version strings and parses out the ints and compares them properly. Or something else.