Restore pass-through of direction keys (#11924)

This moves relevant code into the PlayerControl class and gets rid of separate keyPressed variable.

src/client/clientlauncher.cpp

@@ -70,10 +70,10 @@ static void dump_start_data(const GameStartData &data)
 
 ClientLauncher::~ClientLauncher()
 {
-	delete receiver;
-
 	delete input;
 
+	delete receiver;
+
 	delete g_fontengine;
 	delete g_gamecallback;