Hong Kong businesses have urged the government to roll out its new [Covid](tag?_=covid) -19 app soon so users can become comfortable with how it works as many company executives are optimistic they will be allowed to travel to mainland China without undergoing quarantine as soon as the end of December. The city’s No 2 official revealed after talks with mainland officials on Thursday that for residents to qualify for the scheme they would have to use the Hong Kong Health Code app, which would log a user’s name, infection status and after they cross the border their whereabouts on the…