Improve python interface

[jlogan03]

Fixes #48
Fixes #49

0.8.0 2025-11-08

Support ndarray inputs for python interpn function, require kwargs for most inputs,
and use numpy's internal borrowchecking interface.

Changed

• Rust
  • Use numpy borrowchecking system in python interface
  • Update deps
• Python
  • !Require kwargs for most inputs to interpn function
  • Support ndarray inputs and outputs by flattening and reshaping arrays internally
  • Use plotly instead of matplotlib in examples and benchmarks
  • Use PGO for linux builds only, as other platforms will need their own profiles
    • While PGO profiles could be cross-platform portable because they use instrumentation inserted at the
      LLVM IR level, in practice, the function hashes come out different, causing the counts not to be mapped
      correctly
    • Later, we may be able to resolve this by using QEMU to run the PGO builds on each platform or by uploading
      pgo profiles for individual platform runners as build artifacts