Add benchmarks for the new surfaces.

[MFraters]

This adds benchmarks for the min max surfaces feature added in #396 to monitor performance in future pull requests.

[codecov]

Codecov Report

Merging #397 (4ac3e95) into main (6d4a223) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #397   +/-   ##
=======================================
  Coverage   99.38%   99.38%           
=======================================
  Files          82       82           
  Lines        5041     5041           
=======================================
  Hits         5010     5010           
  Misses         31       31           

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[github-actions]

Benchmark	Main	Feature	Difference (99.9% CI)
Slab interpolation simple none	1.208 ± 0.003 (s=384)	1.209 ± 0.002 (s=363)	-0.0% .. +0.1%
Slab interpolation curved simple none	1.300 ± 0.023 (s=363)	1.300 ± 0.025 (s=332)	-0.5% .. +0.5%
Spherical slab interpolation simple none	1.662 ± 0.027 (s=276)	1.664 ± 0.026 (s=268)	-0.3% .. +0.6%
Slab interpolation simple curved CMS	2.281 ± 0.039 (s=206)	2.276 ± 0.038 (s=191)	-0.8% .. +0.4%
Spherical slab interpolation simple CMS	2.225 ± 0.053 (s=200)	2.241 ± 0.074 (s=206)	-0.2% .. +1.7%
Spherical fault interpolation simple none	1.790 ± 0.017 (s=231)	1.788 ± 0.018 (s=275)	-0.4% .. +0.2%