[FEATURE] choice of keyboard for rdp

[Romain]

Describe the feature:

Possibility to configure the keyboard layout when configuring the connection as on Guacamole, because in qwerty with an azerty keyboard it's not great

Describe why this feature is needed:

For all people :)

Scope of feature:

• TRASA codebase
• dashboard
• [ *] server
• mobile app
• browser extension
• device agent
• website/docs