some optimisations for fe

[GameCat7428]

add 2 or more wi-fi networks to save
add saving apps to menu to run whiteout wi-fi
add upgrading via the app
add interacting with micorSD ( saving chats, photos, etc)

[Forairaaaaa]

Thanks for the suggestions and feedback!

[Forairaaaaa]

Moving this to Ideas so we can continue discussing the proposal and its scope. Any agreed implementation work can be tracked in a separate issue.