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

* Split GM commands into their own files

* Code cleanup

zone/gm_commands/repop.cpp

@@ -0,0 +1,40 @@
+#include "../client.h"
+
+void command_repop(Client *c, const Seperator *sep)
+{
+	int timearg = 1;
+	int delay   = 0;
+
+	if (sep->arg[1] && strcasecmp(sep->arg[1], "force") == 0) {
+		timearg++;
+
+		LinkedListIterator<Spawn2 *> iterator(zone->spawn2_list);
+		iterator.Reset();
+		while (iterator.MoreElements()) {
+			std::string query   = StringFormat(
+				"DELETE FROM respawn_times WHERE id = %lu AND instance_id = %lu",
+				(unsigned long) iterator.GetData()->GetID(),
+				(unsigned long) zone->GetInstanceID()
+			);
+			auto        results = database.QueryDatabase(query);
+			iterator.Advance();
+		}
+		c->Message(Chat::White, "Zone depop: Force resetting spawn timers.");
+	}
+
+	if (!sep->IsNumber(timearg)) {
+		c->Message(Chat::White, "Zone depopped - repopping now.");
+
+		zone->Repop();
+
+		/* Force a spawn2 timer trigger so we don't delay actually spawning the NPC's */
+		zone->spawn2_timer.Trigger();
+		return;
+	}
+
+	c->Message(Chat::White, "Zone depoped. Repop in %i seconds", atoi(sep->arg[timearg]));
+	zone->Repop(atoi(sep->arg[timearg]) * 1000);
+
+	zone->spawn2_timer.Trigger();
+}
+