Add support for voigt_profile

[jaladh-singhal]

It will be really helpful to have support for scipy voigt_profile.

We recently had a usecase for the same at https://github.com/tardis-sn/stardis and implemented our own numba-jit-able function for voigt profile: https://github.com/tardis-sn/stardis/blob/main/stardis/opacities/voigt.py - this might help numba-scipy too.