[Commands] Consolidate #show commands into a singular #show command (#3478)

* [Cleanup] Consolidate #show commands into a singular #show command

# Notes
- All `#show` commands like `#showbuffs` are now subcommands of `#show`.
- All aliases like `#showbuffs` still function.

* Push up progress.

* Final push.

* Cleanup.

* Update ip_lookup.cpp

* emotes not emote

* Cleanup

* Update servertalk.h

* Update show.cpp

* Fix

* Final push.

* #aggro

* #who

zone/gm_commands/show/waypoints.cpp

@@ -0,0 +1,25 @@
+#include "../../client.h"
+
+void ShowWaypoints(Client *c, const Seperator *sep)
+{
+	if (!c->GetTarget() || !c->GetTarget()->IsNPC()) {
+		c->Message(Chat::White, "You must target an NPC to use this command.");
+		return;
+	}
+
+	auto t = c->GetTarget()->CastToNPC();
+
+	if (!t->GetGrid()) {
+		c->Message(
+			Chat::White,
+			fmt::format(
+				"{} is not a part of any grid.",
+				c->GetTargetDescription(t)
+			).c_str()
+		);
+
+		return;
+	}
+
+	t->DisplayWaypointInfo(c);
+}