cargo enable features when building binary #10889
Description
Problem
Use case: bindgen requires feature clap to be enabled when building binaries, however if we put that feature into default feature set, then the entire ecosystem needs to pay the price for building clap even if most of them use bindgen as a build dependency and does not need clap.
This unfortunate situation is caused by lack of mechanism to enable features when building binary.
Proposed Solution
Provides a mechanism to enable features when building binaries.
E.g. a new feature set called "default-binary" that enables specified features when building binaries.
Or we can enable all the required-features of [[bin]].
Notes
No response