[GM Commands] Split GM Commands Into Separate Files (#1766)

* Split GM commands into their own files

* Code cleanup

zone/gm_commands/refreshgroup.cpp

@@ -0,0 +1,19 @@
+#include "../client.h"
+#include "../groups.h"
+
+void command_refreshgroup(Client *c, const Seperator *sep)
+{
+	if (!c) {
+		return;
+	}
+
+	Group *g = c->GetGroup();
+
+	if (!g) {
+		return;
+	}
+
+	database.RefreshGroupFromDB(c);
+	//g->SendUpdate(7, c);
+}
+