[GM Commands] Split GM Commands Into Separate Files (#1766)

* Split GM commands into their own files

* Code cleanup

zone/gm_commands/findclass.cpp

@@ -0,0 +1,84 @@
+#include "../client.h"
+
+void command_findclass(Client *c, const Seperator *sep)
+{
+	int arguments = sep->argnum;
+
+	if (arguments == 0) {
+		c->Message(Chat::White, "Command Syntax: #findclass [search criteria]");
+		return;
+	}
+
+	if (sep->IsNumber(1)) {
+		int class_id = std::stoi(sep->arg[1]);
+		if (class_id >= WARRIOR && class_id <= MERCERNARY_MASTER) {
+			std::string class_name = GetClassIDName(class_id);
+			c->Message(
+				Chat::White,
+				fmt::format(
+					"Class {}: {}",
+					class_id,
+					class_name
+				).c_str()
+			);
+		}
+		else {
+			c->Message(
+				Chat::White,
+				fmt::format(
+					"Class ID {} was not found.",
+					class_id
+				).c_str()
+			);
+		}
+	}
+	else {
+		std::string search_criteria = str_tolower(sep->argplus[1]);
+		int         found_count     = 0;
+		for (int    class_id        = WARRIOR; class_id <= MERCERNARY_MASTER; class_id++) {
+			std::string class_name       = GetClassIDName(class_id);
+			std::string class_name_lower = str_tolower(class_name);
+			if (search_criteria.length() > 0 && class_name_lower.find(search_criteria) == std::string::npos) {
+				continue;
+			}
+
+			c->Message(
+				Chat::White,
+				fmt::format(
+					"Class {}: {}",
+					class_id,
+					class_name
+				).c_str()
+			);
+			found_count++;
+
+			if (found_count == 20) {
+				break;
+			}
+		}
+
+		if (found_count == 20) {
+			c->Message(Chat::White, "20 Classes found... max reached.");
+		}
+		else {
+			auto class_message = (
+				found_count > 0 ?
+					(
+						found_count == 1 ?
+							"A Class was" :
+							fmt::format("{} Classes were", found_count)
+					) :
+					"No Classes were"
+			);
+
+			c->Message(
+				Chat::White,
+				fmt::format(
+					"{} found.",
+					class_message
+				).c_str()
+			);
+		}
+	}
+}
+