Kernel: Add better termios support

I'm not sure if this is correct but at least it's better than before :)

kernel/kernel/Terminal/PseudoTerminal.cpp

@@ -158,7 +158,15 @@ namespace Kernel
 	}
 
 	PseudoTerminalSlave::PseudoTerminalSlave(BAN::String&& name, uint32_t number, mode_t mode, uid_t uid, gid_t gid)
-		: TTY(mode, uid, gid)
+		: TTY({
+			.c_iflag = 0,
+			.c_oflag = 0,
+			.c_cflag = CS8,
+			.c_lflag = ECHO | ICANON,
+			.c_cc = {},
+			.c_ospeed = B38400,
+			.c_ispeed = B38400,
+		  }, mode, uid, gid)
 		, m_name(BAN::move(name))
 		, m_number(number)
 	{}