fix: windows: AltGr maps to LEFT_CTRL+RIGHT_ALT

On Windows, some keyboard layouts have an AltGr button that's similar to
the Mac options button and can be used to send characters.
This PR respects the AltGr button and treat its characters as bubbletea
key runes.

Fixes: #1126

key_windows.go

@@ -274,7 +274,11 @@ func keyType(e coninput.KeyEventRecord) KeyType {
 	case coninput.VK_DELETE:
 		return KeyDelete
 	default:
-		if e.ControlKeyState&(coninput.LEFT_CTRL_PRESSED|coninput.RIGHT_CTRL_PRESSED) == 0 {
+		switch {
+		case e.ControlKeyState.Contains(coninput.LEFT_CTRL_PRESSED) && e.ControlKeyState.Contains(coninput.RIGHT_ALT_PRESSED):
+			// AltGr is pressed, then it's a rune.
+			fallthrough
+		case !e.ControlKeyState.Contains(coninput.LEFT_CTRL_PRESSED) && !e.ControlKeyState.Contains(coninput.RIGHT_CTRL_PRESSED):
 			return KeyRunes
 		}
 
@@ -334,7 +338,7 @@ func keyType(e coninput.KeyEventRecord) KeyType {
 		case '\x1a':
 			return KeyCtrlZ
 		case '\x1b':
-			return KeyCtrlCloseBracket
+			return KeyCtrlOpenBracket // KeyEscape
 		case '\x1c':
 			return KeyCtrlBackslash
 		case '\x1f':
@@ -344,6 +348,8 @@ func keyType(e coninput.KeyEventRecord) KeyType {
 		switch code {
 		case coninput.VK_OEM_4:
 			return KeyCtrlOpenBracket
+		case coninput.VK_OEM_6:
+			return KeyCtrlCloseBracket
 		}
 
 		return KeyRunes