l proceeding in a court of justice . . an appendage or adjunct to the circuit court’” In re GrandJuryInvestigation, 287 So.2d 43 (Fla. 1973) (quoting Craft V. State, 42 Fla. 567, 29 So. 418 (1900)). Indeed, it is the court that gives the grand jury its initial charge and advises the grand jury about its legal dut