[Bot Commands] Separate Bot Commands into Individual Files (#4035)

# Notes
- Separate all bot commands into individual files like regular commands.

# Images

zone/bot_commands/precombat.cpp

@@ -0,0 +1,33 @@
+#include "../bot_command.h"
+
+void bot_command_precombat(Client* c, const Seperator* sep)
+{
+	if (helper_command_alias_fail(c, "bot_command_precombat", sep->arg[0], "precombat")) {
+		return;
+	}
+	if (helper_is_help_or_usage(sep->arg[1])) {
+
+		c->Message(Chat::White, "usage: %s ([set | clear])", sep->arg[0]);
+		return;
+	}
+
+	if (!c->GetTarget() || !c->IsAttackAllowed(c->GetTarget())) {
+
+		c->Message(Chat::White, "This command requires an attackable target.");
+		return;
+	}
+
+	std::string argument(sep->arg[1]);
+
+	if (!argument.compare("set")) {
+		c->SetBotPrecombat(true);
+	}
+	else if (!argument.compare("clear")) {
+		c->SetBotPrecombat(false);
+	}
+	else {
+		c->SetBotPrecombat(!c->GetBotPrecombat());
+	}
+
+	c->Message(Chat::White, "Precombat flag is now %s.", (c->GetBotPrecombat() ? "set" : "clear"));
+}