add WorkoutStateManager for ViewModel functionality

WorkoutsPlus/Features/WorkoutLog/WorkoutLogs.swift

@@ -12,8 +12,6 @@ struct WorkoutLogs: View {
 		@Environment(\.modelContext) private var modelContext
 		@Query(sort: \WorkoutSession.name) private var workoutSessions: [WorkoutSession]
 		
-		@Default(\.isWorkingOut) var isWorkingOut
-		
 		var body: some View {
 				List {
 						Section(header: Text("Dummies")) {
@@ -98,9 +96,6 @@ struct WorkoutLogs: View {
 #Preview("Active WorkoutSession") {
 		NavigationStack {
 				WorkoutLogs()
-						.onAppear {
-								Defaults.shared.isWorkingOut = true
-						}
 		}
 }