MainLogger: Require useFormattingCodes as a constructor parameter

this avoids needing to call Terminal::init() before starting a MainLogger. Since it inits the formatting codes anyway when log messages are first recorded, it shouldn't be necessary to pre-initialize it.

src/PocketMine.php

@@ -237,7 +237,7 @@ namespace pocketmine {
 			Terminal::init();
 		}
 
-		$logger = new MainLogger($dataPath . "server.log");
+		$logger = new MainLogger($dataPath . "server.log", Terminal::hasFormattingCodes());
 		\GlobalLogger::set($logger);
 
 		emit_performance_warnings($logger);