Multiple Openevolve run calls in parallel result in clobbered loggers

[theahura]

If you run openevolve run calls in parallel, each parallel run ends up duplicating each other's logs, because they are all registered against a global logger namespace. This makes the logging basically impossible to use properly

[codelion]

Yeah, this is a known issue, we need to not take the global namespace.

[theahura]

I think #297 is related to this. I am seeing system hangs, and when I use pyspy it points to file access contention leading to deadlocks by the logger