Use `nptyping`..

[goodboy]

Would love to get some sane typing for all our numpy processing internals.

nptyping looks da bomb and I think we should give it a super serious shot 🏄🏼

In particular leveraging the struct-array facilities: https://github.com/ramonhagenaars/nptyping#numpy-structured-arrays

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TODO:

Just dumping a bunch of related links from bugs/research for now. I'll come back and clean this up..

• tractor has a PR we need to get cleaned up and get tested when used with numpy:

  • https://github.com/goodboy/tractor/pull/338

• consider how all this will interplay with the desire for an FSP chaining/cascade DSL:

  • https://github.com/pikers/piker/issues/270

• numba related issues and research:

  • parallel facilities that might work well for doing cross-process QPath rendering
  • https://numba.pydata.org/numba-doc/latest/user/examples.html#multi-threading
  • https://numba.readthedocs.io/en/stable/user/parallel.html#numba-parallel
  • https://github.com/numba/numba/issues/8622
  • https://github.com/numba/numba/issues/5753