This workflow doesn't save the keystore files which are required in order
to create new wallet accounts. It is not yet clear how to proceed with
saving the keystore files without an accountId.
See `setupAccountKeycard` which is missing `storeAccount*` calls vs
working workflow done in `setupAccount`
Closes: #7867
Keycard implementation affected onboarding/login flows.
- new user - first run - new keys into keycard
- new user - first run - import seed phrase into keycard
- old user - first run - login importing from keycard
- login the app using keycard
Fixes: #5972
- startup, login and onboarding modules merged into the single one
- `State` class introduced which is the base class for all states, every state
determines what is the next state in each of 3 possible actions, and what
is the previous state, if it has previous state
- `StateWrapper` class is introduced as a convenient way to expose
`State`'s props and deal with them on the qml side
- startup module maintains states as a linked list and there are few convenient
methods to move through the list `onBackActionClicked`, `onNextPrimaryActionClicked`
`onNextSecondaryActionClicked`, `onNextTertiaryActionClicked`
- redundant code removed
Fixes: #6473