Setup Testing

[ajlacey]

Test the setup of the EconomicConfig struct marshaling by creating a yaml file and loading it. One benefit would be that it highlights the full workflow (i.e. load valid yaml file that gets translated to object, start app with settings).

Add a function UnmarshalEconomicConfig (example: https://pkg.go.dev/encoding/json#Unmarshal) and MarshalEconomicConfig to setup.go. The Unmarshal function will be very similar to the code that's currently in setup.LoadEconomicsConfig.

Once these are added, add a test to setup_test.go (may need to be created), to validate that these work correctly for both valid and invalid yaml files.