Support "only-binary"configuration and UV_ONLY_PROJECT environment variable at project level

[jdputschadi]

Summary

Please allow using "only-binary" via persistent configuration, similar to the way "no-binary" is supported at that level.

"only-binary" has the helpful feature that it will fall back to an older wheel during resolution if needed instead of attempting to build a package.

Thanks,

Jeff.

Example

No response