Add MEDUSA (#1190)

Author: Ly0n

README.md

@@ -2653,6 +2653,7 @@ parameter values.
 - [SDEverywhere](https://github.com/climateinteractive/SDEverywhere) - The framework for system dynamics models created for the global climate simulator En-ROADS, the climate policy simulator C-ROADS and the Energy Policy Simulator.
 - [GCAM-China](https://github.com/umd-cgs/gcam-china) - The Global Change Analysis Model with China provincial-level details.
 - [Open Source Empirical Macro Model](https://github.com/moritzpschwarz/osem) - Study Climate Policies and the wider Macro-economy that can easily be applied to all EU countries.
+- [MEDUSA](https://github.com/bc3LC/medusa) - Modelling Equity and DistribUtional impacts for Socioeconomic Analysis.
 
 
 ## Natural Resources