Make the round participants sign the vtxo tree (#271)

* [proto] add APIs to send and receive musig2 signing data

* [common] add serialization functions for nonces and signatures

* [application] implements tree signing

* fix: remove old debug logs

* [proto] cleaning

* [common] fix musig2.go

* [application] fixes and logs

* [interface] fix: stop forwarding 2 times the events

* [client] add musig2 support + sign the tree when joining a round

* [interface] add new APIs into permissions.go

* [application][proto] rework PingResponse (return all events type)

* [common] split SetKeys into 2 distinct methods

* [client] fixes according to musig2.go changes

* [sdk] support tree signing + new PingResponse

* [sdk] fixes

* [application] revert event channel type

* [application] use domain.RoundEvent as lastEvent type

* [application] remove IsCovenantLess

* comments

* [application] revert roundAborted changes

* [interface] remove bitcointree dependencie

server/internal/core/application/sweeper.go

@@ -149,7 +149,6 @@ func (s *sweeper) createTask(
 			for _, input := range inputs {
 				// sweepableVtxos related to the sweep input
 				sweepableVtxos := make([]domain.VtxoKey, 0)
-				fmt.Println("input", input.GetHash().String(), input.GetIndex())
 
 				// check if input is the vtxo itself
 				vtxos, _ := s.repoManager.Vtxos().GetVtxos(