[Feature Request] Language bar/switch menu

[Pro100RedMushroom]

Description:

Implement the Language bar menu.
Currently, only the indicator for Language bar is present. When pressing on it, it should bring up a small menu where you can switch the desired keyboard layout (Pic.2.). Preferably, the language bar should match they current Retrobar theme instead of bringing up the Win10/Win11 Language bar menu.
For reference, here are a few screenshots of the Language bar in Windowx XP:

Pic.1. Selecting the Language bar icon.

Pic.2. Opening the Language bar icon. 2 layouts available
The "Show the Language bar" option here just turns off Language bar indicator. It can be easily returned in WinXP by going through RMB on the taskbar -> Toolbars -> Language bar. It's probably a good idea to also follow a more general approach to toolbars like seen in Pic.3. in WinXP so this feature can be easily expanded later with more default (and possibly integration with user-created apps?) toolbars.

Pic.3. Toolbars.

Use case:

Quickly seeing all the currently enabled and available language layout options and easily switching between them.