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

* Split GM commands into their own files

* Code cleanup

zone/gm_commands/reloadlevelmods.cpp

@@ -0,0 +1,15 @@
+#include "../client.h"
+
+void command_reloadlevelmods(Client *c, const Seperator *sep)
+{
+	if (sep->arg[1][0] == 0) {
+		if (RuleB(Zone, LevelBasedEXPMods)) {
+			zone->LoadLevelEXPMods();
+			c->Message(Chat::Yellow, "Level based EXP Mods have been reloaded zonewide");
+		}
+		else {
+			c->Message(Chat::Yellow, "Level based EXP Mods are disabled in rules!");
+		}
+	}
+}
+