Make it easy to import and use in other python modules

[chamini2]

I wanted to build on top of the work being done here (specially since diarization is coming soon) and I had to copy paste the transformers code into my code rather than

from insanely_fast_whisper import pipe

pipe(...)

Or maybe

from insanely_fast_whisper import build_pipe

pipe = build_pipe("large-v3", ...)
pip(...)

Can we get initial support for lib use?

[Vaibhavs10]

I'm not opposed to the idea. But I would let @patrick91 weigh in here!

[chamini2]

I think #42 is a good example where lib use would come in handy.

[patrick91]

@chamini2 I don't have time to implement it this week, but happy to review any PRs 😊