[FEA]: Thrust vector's should provide `emplace_back(Args...) -> T&`

### 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

Thrust

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

```c++
thrust::host_vector> out_buffers;
c2h::gen(C2H_SEED(1), out_buffers.emplace_back(42));
```
should compile.

### Describe the solution you'd like

Implement `emplace_back(Args...) -> T&` for thrust vectors

### Describe alternatives you've considered

_No response_

### Additional context

_No response_