Move C declarations to a .pxd file to be available to other Cython modules.

[Mng-dev-ai]

I think It would be great if you move the c declarations to a .pxd file to be available to other cython modules as in my case I don't need to use it as a python module to minimize the python interactions as possible.

[siddhantgoel]

It could be a good idea. Could you please describe your use case a bit more?

[Mng-dev-ai]

I'm working on a cython project and I'm gonna use your package so I wanna be able to import it as a cython module which is not possible without using .pxd file

[Mng-dev-ai]

I may can work on a pr if you want

[siddhantgoel]

Yeah that would be helpful. And as I understand, you're planning to move only the C declarations to that file, right? So the Finder and _Parser classes stay?

[Mng-dev-ai]

Yes, the class itself will be the same but the declarations such cdef bytes target will be moved.

[siddhantgoel]

Sounds good. Let's do it!

[Mng-dev-ai]

Done at #60