ci: add codspeed benchmarks

[tlambert03]

This adds benchmark testing for each PR, results at https://codspeed.io/tlambert03/ome-types

[codecov]

Codecov Report

Merging #200 (3525613) into main (3d2a68e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #200   +/-   ##
=======================================
  Coverage   97.19%   97.19%           
=======================================
  Files          24       24           
  Lines         890      890           
=======================================
  Hits          865      865           
  Misses         25       25           

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[codspeed-hq]

CodSpeed Performance Report

Congrats! CodSpeed is installed 🎉

🆕 7 new benchmarks were detected.

You will start to see performance impacts in the reports once the benchmarks are run from your default branch.

Detected benchmarks

• test_time_from_xml[small] (91.3 ms)
• test_time_from_xml[med] (387.1 ms)
• test_time_from_xml[large] (9.6 s)
• test_time_to_xml[small] (46.5 ms)
• test_time_to_xml[med] (192.4 ms)
• test_time_to_xml[large] (5.5 s)
• test_time_from_tiff (58.1 ms)