GeoSIR example

[JBris]

Is your feature request related to a problem? Please describe.
Need example of stochastic agent-based model

Describe the solution you'd like
Implement GeoSIR: https://mesa-geo.readthedocs.io/stable/examples/geo_sir.html

Describe alternatives you've considered
N/A

Additional context
Equifinality may be problematic. Bayesian calibration as solution? Can include plots of multimodal posterior marginals. Perhaps also probabilistic surrogate model

[JBris]

@MatthieuVignes @dtsh2