Add ability to sample data

[MatthewFlamm]

• [x] use better default locator?
• [x] add tests
• [x] wait for changes upstream to better support locators without using to use vtk directly.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (4f01343) 99.30% compared to head (5a94f76) 99.31%. Report is 34 commits behind head on main.

:exclamation: Current head 5a94f76 differs from pull request most recent head fb6bcfe. Consider uploading reports for the commit fb6bcfe to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #87 +/- ## ======================================= Coverage 99.30% 99.31% ======================================= Files 4 4 Lines 288 292 +4 ======================================= + Hits 286 290 +4 Misses 2 2 ```

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[MatthewFlamm]

Current docstring test for surface sampling has some points that cannot be located in the original mesh. Using vtkStaticCellLocator fixed this, but wait for a newer version of PyVista to better support this.