[Commands] Add #finddeity Command (#3435)

# Notes
- Add `#finddeity` command.
- Remove `ConvertDeityTypeBitToDeityType` as it's unused.
- Rename `ConvertDeityTypeToDeityTypeBit` to `GetDeityBitmask`.

zone/gm_commands/finddeity.cpp

@@ -0,0 +1,73 @@
+#include "../client.h"
+
+void command_finddeity(Client *c, const Seperator *sep)
+{
+	const auto arguments = sep->argnum;
+	if (!arguments) {
+		c->Message(Chat::White, "Usage: #finddeity [Search Criteria]");
+		return;
+	}
+
+	if (sep->IsNumber(1)) {
+		const auto  deity_id   = static_cast<EQ::deity::DeityType>(Strings::ToInt(sep->arg[1]));
+		const auto& deity_name = EQ::deity::GetDeityName(deity_id);
+		if (!deity_name.empty()) {
+			const auto deity_bit = EQ::deity::GetDeityBitmask(deity_id);
+
+			c->Message(
+				Chat::White,
+				fmt::format(
+					"Deity {} | {} ({})",
+					deity_id,
+					deity_name,
+					deity_bit
+				).c_str()
+			);
+			return;
+		}
+
+		c->Message(
+			Chat::White,
+			fmt::format(
+				"Deity ID {} was not found.",
+				deity_id
+			).c_str()
+		);
+		return;
+	}
+
+	const auto& search_criteria = Strings::ToLower(sep->argplus[1]);
+	if (!search_criteria.empty()) {
+		auto found_count = 0;
+		for (const auto& d : EQ::deity::GetDeityMap()) {
+			const auto& deity_name_lower = Strings::ToLower(d.second);
+			if (!Strings::Contains(deity_name_lower, search_criteria)) {
+				continue;
+			}
+
+			const auto deity_bit = EQ::deity::GetDeityBitmask(d.first);
+
+			c->Message(
+				Chat::White,
+				fmt::format(
+					"Deity {} | {} ({})",
+					d.first,
+					d.second,
+					deity_bit
+				).c_str()
+			);
+
+			found_count++;
+		}
+
+		c->Message(
+			Chat::White,
+			fmt::format(
+				"{} Deit{} found.",
+				found_count,
+				found_count != 1 ? "ies" : "y"
+			).c_str()
+		);
+	}
+}
+