[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/timers.cpp

@@ -0,0 +1,52 @@
+#include "../../client.h"
+#include "../../dialogue_window.h"
+
+void ShowTimers(Client *c, const Seperator *sep)
+{
+	auto t = c;
+	if (c->GetTarget() && c->GetTarget()->IsClient()) {
+		t = c->GetTarget()->CastToClient();
+	}
+
+	std::vector<std::pair<pTimerType, PersistentTimer *>> l;
+	t->GetPTimers().ToVector(l);
+
+	if (l.empty()) {
+		c->Message(
+			Chat::White,
+			fmt::format(
+				"{} {} no recast timers.",
+				c->GetTargetDescription(t, TargetDescriptionType::UCYou),
+				c == t ? "have" : "has"
+			).c_str()
+		);
+		return;
+	}
+
+	std::string popup_table;
+
+	popup_table += DialogueWindow::TableRow(
+		DialogueWindow::TableCell("Timer ID") +
+		DialogueWindow::TableCell("Remaining Time")
+	);
+
+	for (const auto& e : l) {
+		const uint32 remaining_time = e.second->GetRemainingTime();
+		if (remaining_time) {
+			popup_table += DialogueWindow::TableRow(
+				DialogueWindow::TableCell(Strings::Commify(e.first)) +
+				DialogueWindow::TableCell(Strings::SecondsToTime(remaining_time))
+			);
+		}
+	}
+
+	popup_table = DialogueWindow::Table(popup_table);
+
+	c->SendPopupToClient(
+		fmt::format(
+			"Recast Timers for {}",
+			c->GetTargetDescription(t, TargetDescriptionType::UCSelf)
+		).c_str(),
+		popup_table.c_str()
+	);
+}