Add schema, sqlc queries, store fields, and SqlStore support for
recording server confirmation-risk decisions with static loop-in swaps.
Store the decision timestamp so payment-deadline recovery can
reconstruct elapsed time after restart.
Represent withdrawal txids as optional in the domain model and keep
pending withdrawals visible through GetAllWithdrawals.
Pending rows now surface nil and zero values in Go and empty and zero
defaults over RPC, while malformed non-NULL txids still fail loudly.
Also sync godoc's with how it actually behaves: returns pending withdraws
in addition to finalized ones.
Added option WithSkippedTxns, which has one historical problematic tx by default.
Sweeps originating from these transactions are omitted when reading from DB.
loopdb: add column sweep_batches.cancelled and replaced DropBatch with
CancelBatch. It is needed, because sweep.batch_id is a foreign key to batch.
Changed StoreMock.InsertSweepBatch not to reuse batch_id. This is needed by
the test, which checks that new batch has fresh ID.
Don't copy values of ID column from sweeps to sweeps2 and let it auto-assign
values there. This is needed for the sequencer for that column to be up-to-date
with the values.
SwapHash used to be a key in the sweeps table. Now the key is outpoint which
replaces columns outpoint_txid and outpoint_index. In-memory structures and unit
tests were also updated to use outpoint as key. Outpoint is truly unique.
Deposit schema extension with a withdrawal
sweep address. If the user selects a deposit
for withdrawal the destination address of the
sweep is stored here.
