Renamed tty.h to stdio.h

Added puts() declaration

include/stdio.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <stdarg.h>
+
+int putchar(int c);
+
+int puts(const char *str);
+
+int printf(const char *format, ...);
+
+int sprintf(char *str, const char *format, ...);