add Workout, Exercise and their Library, Add, and Details views

WorkoutsPlus/ContentView.swift

@@ -13,14 +13,14 @@ struct ContentView: View {
 		
 		var body: some View {
 				TabView {
-						WorkoutLibraryView()
+						WorkoutLibrary()
 								.tabItem {
-										Image(systemName: "gauge.with.needle.fill")
+										Image(systemName: "figure.run.square.stack")
 										Text("Workouts")
 								}
-						ExerciseLibraryView()
+						ExerciseLibrary()
 								.tabItem {
-										Image(systemName: "figure.run.square.stack.fill")
+										Image(systemName: "figure.run")
 										Text("Exercises")
 								}
 						Text("Settings")
@@ -34,5 +34,5 @@ struct ContentView: View {
 
 #Preview {
 		ContentView()
-				.modelContainer(for: [Exercise.self, Workout.self], inMemory: true)
+				.modelContainer(SampleData.shared.modelContainer)
 }