Help Wanted - Support for other frameworks in spdl.io.

[mthrok]

In spdl.io module, there are to_numpy, to_numba and to_torch functions which convert the CPUBuffer and the CUDABuffer into the array format of each framework without copy.
It would be nice if we can extend the functionality to DLPack and Jax.

Requirements:

• spdl.io.to_dlpack(buffer: CPUBuffer | CUDABuffer): convert CPUBuffer and CUDABuffer into DLPack native array format without copy-ing.
• spdl.io.to_jax(buffer: CPUBuffer | CUDABuffer): convert CPUBuffer and CUDABuffer into Jax native array format without copy-ing.