Use flutter_keyboard_visibility in all forms

[zaelgohary]

Reference: https://github.com/threefoldtech/threefold_connect/pull/711/files

[AlaaElattar]

Work Completed:

• Supported flutter_keyboard_visibility for bridge, wallet and dao screens.
• when user click out when the keyboard is open, it will close.

[AlaaElattar]

Work in progress :

• working on pr comments.