A city of the metropolitan class may enact any ordinances, bylaws, rules, regulations, and resolutions not inconsistent with the general laws of the state, as may be necessary or expedient, in addition to specific powers otherwise granted by law, for maintaining the peace, good government, and welfare of the city and for preserving order, securing persons or property from violence, danger, and destruction, for protecting public and private property, and for promoting the public health, safety, convenience, comfort, general interests, and welfare of the inhabitants of the city.