[3/?] StaticAddr: Deposit tracking and timeout sweep

[hieblmi]

It introduces tracking of deposits to a static address and monitoring of the CSV expiry. Instead of using RegisterConfirmationsNtfn to detect spends to a pkScript, we poll the lnd account of the imported static address taproot script and notify the main event loop of the manager about new deposits to a static address.

~Todo:~

~- state machine recovery~ ~- listening for timeout tx confirmations to be sure that the client claimed funds.~