In the send-sweep module as well as in the PayWithQR this removes
the UserIntent handling and instead moves that to the main.qml
exclusively.
Additionally in the send-sweep module the camera work is split
into its own page, like in the other parts of the app. This helps
us avoiding hacks when we want the main functionality without the
camera.
This is the last of the series of reworks, we should have all
former functionality working again.
The initial design has done well for over 2 years, but problems
are starting to show.
This does a bit of cleanup in the UX and many cleanups in the
underlying architecture that were the result of those UX choices.
We remove the clipboard (paste) concept from the camera pipeline
completely and simply make it a new top-level button "paste" on the
send page. This helps discovery AND helps architecture!
The both workflows now also become 2 stage affairs, when the button
is pressed we open a page that does the scanning or pasting and then
introspects the actual data in order to redirect to the right page.
This means that we auto-detect if the scanned item is an address or
a private key or whatever, and handle it appropriately without needing
any user interaction.