As we still support older versions of Qt, this moves to load
the MultiEffect (blurring specifically) dynamically and avoids
the entire project failing if the effects module is not found.
The effects module was introduced in Qt6.5
This detects that the currently selected wallet is fully encryted and if
it is, it shows a password request page on top of the current screen.
The default setup aims to have people type a PIN in numbers to unlock
the wallet, but we also provide a way to make it use a textual password
instead.
tomFlowee