[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/uptime.cpp

@@ -0,0 +1,19 @@
+#include "../../client.h"
+#include "../../worldserver.h"
+
+extern WorldServer worldserver;
+
+void ShowUptime(Client *c, const Seperator *sep)
+{
+	auto pack = new ServerPacket(ServerOP_Uptime, sizeof(ServerUptime_Struct));
+
+	auto s = (ServerUptime_Struct *) pack->pBuffer;
+	strn0cpy(s->adminname, c->GetName(), sizeof(s->adminname));
+
+	if (sep->IsNumber(2) && Strings::ToUnsignedInt(sep->arg[2]) > 0) {
+		s->zoneserverid = Strings::ToUnsignedInt(sep->arg[2]);
+	}
+
+	worldserver.SendPacket(pack);
+	safe_delete(pack);
+}