Anchors support

[benthecarman]

haven't tested but this would at least let us play with anchors

we probably would want to make this optional

[TonyGiorgio]

Should we change this value at all?

mutiny-node/mutiny-core/src/fees.rs

Lines 175 to 186 in d200111

	fn num_blocks_from_conf_target(confirmation_target: ConfirmationTarget) -> usize {
	match confirmation_target {
	// MempoolMinimum is only used for anchor channels which we don't support.
	// Just setting it to the max confirmation target for now.
	ConfirmationTarget::MempoolMinimum => 1008,
	// Background is VERY lax and may never confirm if used directly
	// it is only meant for lower ranges of transaction to enter mempool
	ConfirmationTarget::Background => 1008,
	ConfirmationTarget::Normal => 6,
	ConfirmationTarget::HighPriority => 3,
	}
	}

[benthecarman]

Looks like for ldk-sample they are using 144 blocks for Background, we could change to that and keep MempoolMinimum. However it is probably better to be safe than sorry, we don't wanna cause force closures again.