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

WorkoutsPlus/Exercise/ExerciseDetail.swift

@@ -0,0 +1,45 @@
+//
+//  ExerciseDetailsView.swift
+//  WorkoutsPlus
+//
+//  Created by Felix Förtsch on 10.08.24.
+//
+
+import SwiftUI
+
+struct ExerciseDetail: View {
+		@Environment(\.dismiss) private var dismiss
+		@Environment(\.modelContext) private var modelContext
+		
+		@Bindable var exercise: Exercise
+		
+		var body: some View {
+				
+				Form {
+						TextField("Exercise Name", text: $exercise.name)
+								.toolbar {
+										ToolbarItem(placement: .topBarTrailing) {
+												Button("Save") {
+														saveItem()
+														dismiss()
+												}
+										}
+								}
+				}
+				.navigationTitle("Exercise Details")
+		}
+		
+		private func saveItem() {
+				if modelContext.hasChanges {
+						do {
+								try modelContext.save()
+						} catch {
+								print("Failed to save exercise: \(error.localizedDescription)")
+						}
+				}
+		}
+}
+
+#Preview {
+		ExerciseDetail(exercise: Exercise("New Exercise"))
+}