term: obtain the cursor position via termios.h (#11372)

vlib/readline/readline_windows.c.v

@@ -10,6 +10,10 @@ module readline
 
 import os
 
+// needed for parity with readline_default.c.v
+struct Termios {
+}
+
 // Only use standard os.get_line
 // Need implementation for readline capabilities
 //