[management] Add validate flow response (#4172)

This PR adds a validate flow response feature to the management server by integrating an IntegratedValidator component. The main purpose is to enable validation of PKCE authorization flows through an integrated validator interface.

- Adds a new ValidateFlowResponse method to the IntegratedValidator interface
- Integrates the validator into the management server to validate PKCE authorization flows
- Updates dependency version for management-integrations

management/server/integrations/integrated_validator/interface.go

@@ -3,6 +3,7 @@ package integrated_validator
 import (
 	"context"
 
+	"github.com/netbirdio/netbird/management/proto"
 	nbpeer "github.com/netbirdio/netbird/management/server/peer"
 	"github.com/netbirdio/netbird/management/server/types"
 )
@@ -17,4 +18,5 @@ type IntegratedValidator interface {
 	PeerDeleted(ctx context.Context, accountID, peerID string) error
 	SetPeerInvalidationListener(fn func(accountID string))
 	Stop(ctx context.Context)
+	ValidateFlowResponse(ctx context.Context, peerKey string, flowResponse *proto.PKCEAuthorizationFlow) *proto.PKCEAuthorizationFlow
 }