Function emit_user_project_wrapper_around 

pub fn emit_user_project_wrapper_around(
    macro_module: &str,
    carries: &str,
) -> String

Emit a user_project_wrapper — the efabless golden Caravel wrapper interface, verbatim ports, instantiating the full-interface user macro macro_module as mprj and connecting EVERY wrapper pin 1:1 (the passthrough that makes the placed-and-routed wrapper LVS-clean). carries names what the macro holds, for the header.