CLI to interact with the wallet layer from the terminal. The CLI acts as a proxy to the wallet backend server (and therefore, requires the wallet server to be up-and-running) such that every endpoint from the API has an equivalent command in the CLI (which delegates the logic to the API via an HTTP call).

Each command should output a corresponding JSON object (got from the API).

We have a corresponding web-server that serve the various API endpoints, defaulting to an error 501 Not Implemented for endpoints that aren't yet implemented.