These rules shall apply to every trial court of criminal jurisdiction within this State, within the limits of the jurisdiction and the powers of the court provided by law, and the procedure therein shall conform to these rules insofar as practicable. They shall apply insofar as practicable in magistrate’s courts, municipal courts, and family courts to the extent they are not inconsistent with the statutes and rules governing those courts. In any case where no provision is made by statute or these rules, the procedure shall be according to the practice as it has heretofore existed in the courts of the State.