Detect when IORuntime is inside a container with too-small cpu configured

[Daenyth]

Related to #3750 I think this would be a good addition:

• On IORuntime initialization
• Detect if we are inside a container (method TBD)
• If we are, check the available cpu count
• If 1, we probably are in a container environment where the core count has not been configured in a way that is appropriate for CE
• Print a warning message once

All that behavior should also be able to be disabled similar to the other runtime utilities using a property/-Darg

Possibly useful info:

• https://developers.redhat.com/articles/2022/04/19/java-17-whats-new-openjdks-container-awareness
• https://stackoverflow.com/questions/23513045/how-to-check-if-a-process-is-running-inside-docker-container