Integrate Benchmarks Into CI

[RobertJacobsonCDC]

This WIP PR integrates benchmarks into CI. There are two primary tasks:

1. Build benchmarks
2. Run benchmarks and compare to baseline to detect performance regressions

The first is trivial. The second is complicated.

[github-actions]

Benchmark for 4b3fa7b

Click to view benchmark

Test	Base	PR	%
example basic-infection	12.6±0.33ms	12.6±0.53ms	0.00%
example births-deaths	948.6±13.07ms	945.8±11.05ms	-0.30%

[RobertJacobsonCDC]

This implementation uses criterion-compare from the GitHub Actions marketplace.

[RobertJacobsonCDC]

Basic reporting of comparison of PR to main branch is complete. For now features beyond this basic functionality will be considered new tasks and put on a new issue.