[Cleanup] Cleanup Stance Code (#4368)

* [Cleanup] Cleanup Stance-based Code

* Command

* Update emu_constants.h

* Update stance.cpp

* Cleanup

zone/gm_commands/find/stance.cpp

@@ -0,0 +1,63 @@
+#include "../../client.h"
+
+void FindStance(Client *c, const Seperator *sep)
+{
+	if (sep->IsNumber(2)) {
+		const uint8 stance_id = static_cast<uint8>(Strings::ToUnsignedInt(sep->arg[2]));
+		const std::string& stance_name = Stance::GetName(stance_id);
+		if (Strings::EqualFold(stance_name, "UNKNOWN STANCE")) {
+			c->Message(
+				Chat::White,
+				fmt::format(
+					"Stance ID {} does not exist.",
+					stance_id
+				).c_str()
+			);
+
+			return;
+		}
+
+		c->Message(
+			Chat::White,
+			fmt::format(
+				"Stance {} | {}",
+				stance_id,
+				stance_name
+			).c_str()
+		);
+
+		return;
+	}
+
+	const std::string& search_criteria = Strings::ToLower(sep->argplus[2]);
+
+	uint32 found_count = 0;
+
+	for (const auto& e : stance_names) {
+		const std::string& stance_name_lower = Strings::ToLower(e.second);
+		if (!Strings::Contains(stance_name_lower, search_criteria)) {
+			continue;
+		}
+
+		c->Message(
+			Chat::White,
+			fmt::format(
+				"Stance {} | {}",
+				e.first,
+				e.second
+			).c_str()
+		);
+
+		found_count++;
+	}
+
+	c->Message(
+		Chat::White,
+		fmt::format(
+			"{} Stance{} found matching '{}'.",
+			found_count,
+			found_count != 1 ? "s" : "",
+			sep->argplus[2]
+		).c_str()
+	);
+}