add a forfait button in team group stage view

PadelClub/Views/GroupStage/Components/GroupStageTeamView.swift

@@ -106,6 +106,29 @@ struct GroupStageTeamView: View {
                             groupStage._matches().forEach({ $0.updateTeamScores() })
                         }
                     }
+                    
+                    if let groupStagePosition = team.groupStagePosition {
+                        Section {
+                            RowButtonView("Forfait", role: .destructive) {
+                                team.walkOut = true
+                                let matches = groupStage.matches(forGroupStagePosition: groupStagePosition)
+                                    .filter({
+                                        $0.hasStarted() == false && $0.hasEnded() == false
+                                    })
+
+                                matches
+                                    .forEach({
+                                        if let teamPosition = $0.teamPosition(for: team) {
+                                            $0.setWalkOut(teamPosition)
+                                        }
+                                    })
+                                tournamentStore?.matches.addOrUpdate(contentOfs: matches)
+                                _save()
+                            }
+                        } footer: {
+                            Text("En indiquant cette équipe forfaite, le résultat des matchs restant dans la poule seront mis à \(defaultScore) pour leur adversaire.")
+                        }
+                    }
                 }
             }
         }
@@ -184,6 +207,10 @@ struct GroupStageTeamView: View {
         .navigationTitle("Détail de l'équipe")
     }
     
+    private var defaultScore: String {
+        groupStage.matchFormat.defaultWalkOutScore(false).compactMap({ String($0) + "/0" }).joined(separator: " ")
+    }
+    
     private var _networkErrorMessage: String {
         ContactManagerError.getNetworkErrorMessage(sentError: sentError, networkMonitorConnected: networkMonitor.connected)
     }