Rename common_runtime directory to common-runtime for consistency with other crate directory names

[andygrove]

Is your feature request related to a problem or challenge?

The new common_runtime directory uses an underscore as a separator, but other crates, such as physical-expr and functions-array use a hyphen. I think it would be better to stick to one format.

Describe the solution you'd like

Rename common_runtime directory to common-runtime for consistency with other crate directory names

Describe alternatives you've considered

No response

Additional context

No response

[alamb]

I will make a PR for this shortly