[FEA]: Implement `<mutex>`

### Is this a duplicate?

- [X] I confirmed there appear to be no [duplicate issues](https://github.com/NVIDIA/cccl/issues) for this request and that I agree to the [Code of Conduct](CODE_OF_CONDUCT.md)

### Area

libcu++

### Is your feature request related to a problem? Please describe.

We should implement `std::mutex` to improve user experience when working with parallel code

### Describe the solution you'd like

We should adopt libc++ mutex implementation to be suitable for our GPUs

### Describe alternatives you've considered

_No response_

### Additional context

_No response_