[Android] Better user experience when using NFC

[AdamVe]

This PR iterates on the ways how we communicate that NFC is being used.

The goal is to make using of NFC YubiKeys the best possible experience for our users:

• long taking operations are visualized and users are aware that the application is reading the data
• ability to redo action over NFC when it failed, without the need to restarting the action from the UI
• beautiful living UI with animations and transitions (currently using Material UI bottom sheet widget)
• improved integration with Android - correct unfocusing of widgets so that the software keyboard does not popup unnecessarily.

Current demo:

demo-nfc-activity.mp4