Dummy moat distributor
Implement a dummy moat distributor to distribute the censorship map (bridgedb#40025).
It requires three API endpoints:
- Get Circunvention Map. Provide the static json file with the list of countries.
- Get circunvention settings. Use the IP of the client (or a provided param) to return the right settings for the country.
- Get BuiltIn bridges.
As long as #12 is not ready we'll provide dummy bridges in the circunvention map to test that everything works properly.