RSDK-10041 - better warnings on out-of-date CLI

[stuqdog]

Adds better warnings on out-of-date CLI. The logic flow is as such:

• Determine the local version and the latest version.
  -- if both can be determined and the local version is older than the latest version, emit warning and return
  -- if both can be determined and the local version is not older than the latest version, then emit no warning and return
• if local version and/or latest version can't be determined, then determine when the binary was built.
  -- if we can't determine when the binary was built, return
  -- if we can determine when the binary was built, emit a warning if it's more than a week old

Tested locally by artificially amending the version tag and build window (from one week to one second), confirmed the cases worked as described.