Request to add indication when switching input method between different languages.

[bearzyj]

Environment

• iPad Pro 11-inch (M4)
• iPadOS 17.5.1
• Magic Keyboard for iPad Pro 11-inch (M4)
• iSH 1.3.2 (Build 494)

Issue description
When switching input method among Chinese/Japanese/English by pressing Control + Space button, there is no any indication or tip in the screen. So it's difficult to know what exactly is the current language.

Request
Hope to add the feature to allow user to know what is the language that being switched, when using shortcut combined keys on magic key board.