New boarding protocol (#279)

* [domain] add reverse boarding inputs in Payment struct

* [tx-builder] support reverse boarding script

* [wallet] add GetTransaction

* [api-spec][application] add reverse boarding support in covenantless

* [config] add reverse boarding config

* [api-spec] add ReverseBoardingAddress RPC

* [domain][application] support empty forfeits txs in EndFinalization events

* [tx-builder] optional connector output in round tx

* [btc-embedded] fix getTx and taproot finalizer

* whitelist ReverseBoardingAddress RPC

* [test] add reverse boarding integration test

* [client] support reverse boarding

* [sdk] support reverse boarding

* [e2e] add sleep time after faucet

* [test] run using bitcoin-core RPC

* [tx-builder] fix GetSweepInput

* [application][tx-builder] support reverse onboarding in covenant

* [cli] support reverse onboarding in covenant CLI

* [test] rework integration tests

* [sdk] remove onchain wallet, replace by onboarding address

* remove old onboarding protocols

* [sdk] Fix RegisterPayment

* [e2e] add more funds to covenant ASP

* [e2e] add sleeping time

* several fixes

* descriptor boarding

* remove boarding delay from info

* [sdk] implement descriptor boarding

* go mod tidy

* fixes and revert error msgs

* move descriptor pkg to common

* add replace in go.mod

* [sdk] fix unit tests

* rename DescriptorInput --> BoardingInput

* genrest in SDK

* remove boarding input from domain

* remove all "reverse boarding"

* rename "onboarding" ==> "boarding"

* remove outdate payment unit test

* use tmpfs docker volument for compose testing files

* several fixes

pkg/client-sdk/client/client.go

@@ -23,11 +23,8 @@ type ASPClient interface {
 	ListVtxos(ctx context.Context, addr string) ([]Vtxo, []Vtxo, error)
 	GetRound(ctx context.Context, txID string) (*Round, error)
 	GetRoundByID(ctx context.Context, roundID string) (*Round, error)
-	Onboard(
-		ctx context.Context, tx, userPubkey string, congestionTree tree.CongestionTree,
-	) error
 	RegisterPayment(
-		ctx context.Context, inputs []VtxoKey, ephemeralPublicKey string,
+		ctx context.Context, inputs []Input, ephemeralKey string,
 	) (string, error)
 	ClaimPayment(
 		ctx context.Context, paymentID string, outputs []Output,
@@ -37,7 +34,7 @@ type ASPClient interface {
 	) (<-chan RoundEventChannel, error)
 	Ping(ctx context.Context, paymentID string) (RoundEvent, error)
 	FinalizePayment(
-		ctx context.Context, signedForfeitTxs []string,
+		ctx context.Context, signedForfeitTxs []string, signedRoundTx string,
 	) error
 	CreatePayment(
 		ctx context.Context, inputs []VtxoKey, outputs []Output,
@@ -45,6 +42,7 @@ type ASPClient interface {
 	CompletePayment(
 		ctx context.Context, signedRedeemTx string, signedUnconditionalForfeitTxs []string,
 	) error
+	GetBoardingAddress(ctx context.Context, userPubkey string) (string, error)
 	SendTreeNonces(
 		ctx context.Context, roundID, cosignerPubkey string, nonces bitcointree.TreeNonces,
 	) error
@@ -55,12 +53,13 @@ type ASPClient interface {
 }
 
 type Info struct {
-	Pubkey              string
-	RoundLifetime       int64
-	UnilateralExitDelay int64
-	RoundInterval       int64
-	Network             string
-	MinRelayFee         int64
+	Pubkey                     string
+	RoundLifetime              int64
+	UnilateralExitDelay        int64
+	RoundInterval              int64
+	Network                    string
+	MinRelayFee                int64
+	BoardingDescriptorTemplate string
 }
 
 type RoundEventChannel struct {
@@ -68,11 +67,38 @@ type RoundEventChannel struct {
 	Err   error
 }
 
+type Input interface {
+	GetTxID() string
+	GetVOut() uint32
+	GetDescriptor() string
+}
+
 type VtxoKey struct {
 	Txid string
 	VOut uint32
 }
 
+func (k VtxoKey) GetTxID() string {
+	return k.Txid
+}
+
+func (k VtxoKey) GetVOut() uint32 {
+	return k.VOut
+}
+
+func (k VtxoKey) GetDescriptor() string {
+	return ""
+}
+
+type BoardingInput struct {
+	VtxoKey
+	Descriptor string
+}
+
+func (k BoardingInput) GetDescriptor() string {
+	return k.Descriptor
+}
+
 type Vtxo struct {
 	VtxoKey
 	Amount                  uint64