Keyboard layout selection before entering credentials

[wessel-novacustom]

Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

Currently, the keyboard layout is US. However, a lot of users actually have a different keyboard layout, like AZERTY (French) and QWERTZ (German).

Describe the solution you'd like A clear and concise description of what you want to happen.

Before entering credentials, the user should be prompted to select the keyboard layout:

• QWERTY (US)
• AZERTY (FR)
• QWERTZ (DE)
• Other keyboard layout ... - - List with all other possible keyboard layouts.

[tlaurion]

See #555