[keyboard layouts] use English language names

This normalizes language names to English and specify English in QWERTY/ABC/AZERTY 

***Future consideration***
In future because the OSK Button label is rather limited in length that a ***ID*** field could be implemented  So that ***layout name*** would be displayed in selection list and in ***id*** would show in button label something like.

```
<layout name="English ABC" id=eng abc>
<layout name="English QWERTY" id=eng qwerty>
```
However that last part (implementing the id) I would require assistance in the C++ portion @stefansaraev understands this idea.

@MartijnKaijser hope this helps the author of #5419 make up his mind and rebase/change his PR.