Add additional console mode constants

Add all console mode constants listed on
https://msdn.microsoft.com/en-us/library/windows/desktop/ms686033(v=vs.85).aspx

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

winterm/api.go

@@ -49,17 +49,22 @@ var (
 const (
 	// Console modes
 	// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686033(v=vs.85).aspx.
-	ENABLE_PROCESSED_INPUT = 0x0001
-	ENABLE_LINE_INPUT      = 0x0002
-	ENABLE_ECHO_INPUT      = 0x0004
-	ENABLE_WINDOW_INPUT    = 0x0008
-	ENABLE_MOUSE_INPUT     = 0x0010
-	ENABLE_INSERT_MODE     = 0x0020
-	ENABLE_QUICK_EDIT_MODE = 0x0040
-	ENABLE_EXTENDED_FLAGS  = 0x0080
-
-	ENABLE_PROCESSED_OUTPUT   = 0x0001
-	ENABLE_WRAP_AT_EOL_OUTPUT = 0x0002
+	ENABLE_PROCESSED_INPUT        = 0x0001
+	ENABLE_LINE_INPUT             = 0x0002
+	ENABLE_ECHO_INPUT             = 0x0004
+	ENABLE_WINDOW_INPUT           = 0x0008
+	ENABLE_MOUSE_INPUT            = 0x0010
+	ENABLE_INSERT_MODE            = 0x0020
+	ENABLE_QUICK_EDIT_MODE        = 0x0040
+	ENABLE_EXTENDED_FLAGS         = 0x0080
+	ENABLE_AUTO_POSITION          = 0x0100
+	ENABLE_VIRTUAL_TERMINAL_INPUT = 0x0200
+
+	ENABLE_PROCESSED_OUTPUT            = 0x0001
+	ENABLE_WRAP_AT_EOL_OUTPUT          = 0x0002
+	ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x0004
+	DISABLE_NEWLINE_AUTO_RETURN        = 0x0008
+	ENABLE_LVB_GRID_WORLDWIDE          = 0x0010
 
 	// Character attributes
 	// Note: