Compare ebola scenarios

[pratikunterwegs]

This PR is WIP #221 and builds on #225 to allow outcomes_averted() to work with outputs from the Ebola model. Scenarios are matched to the baseline by the parameter set and replicate number.

[github-actions]

This is how benchmark results would change (along with a 95% confidence interval in relative change) if 42b87b0 is merged into main:

• ✔️default_ode: 11.1ms -> 11ms [-3.25%, +0.91%]
• ❗🐌default_ode_interventions: 98ms -> 99ms [+0.2%, +1.74%]
• ✔️default_ode_param_vec: 837ms -> 834ms [-0.77%, +0.1%]
• ✔️default_ode_paramvec_intervs: 6.25s -> 6.23s [-0.77%, +0.31%]
• 🚀ebola: 566ms -> 562ms [-1.23%, -0.04%]
  Further explanation regarding interpretation and methodology can be found in the documentation.