Electrical adapter question

I have just purchased a 2017 Grand Design Solitude 5th wheel. I am trying to find an electrical adapter that will allow me to plug in a standard 110 volt extension cord to the RV without having to use the supplied, bulky, 50 amp power cord. This would make life easier when the RV is parked at my home and allow me to pre-cool the refrigerator before loading food. The connection on the side of the RV is a 3 prong, 50 amp twist lock:





Is there a short adapter available to allow my house power and standard 110 volt extension cord to plug into this RV connection?

Thank you for any help.
Vic