Applying certain health and safety requirements to short-term rental units and home amenities; prohibiting certain activities at a home amenity or short-term rental; authorizing the Mayor and City Council of Baltimore City or the governing body of a county to adopt certain rules or regulations relating to short-term rentals; including "short-term rental platform" and "short-term rental unit" in the definition of "hotel" for the purpose of the county and municipal corporation hotel rental tax; etc.