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

WorkoutsPlus/Exercise/AddExercise.swift

@@ -0,0 +1,41 @@
+//
+//  AddExercise.swift
+//  WorkoutsPlus
+//
+//  Created by Felix Förtsch on 18.08.24.
+//
+
+import SwiftUI
+
+struct AddExercise: View {
+		@Environment(\.modelContext) private var modelContext
+		@Environment(\.dismiss) private var dismiss
+		
+		@Bindable var exercise: Exercise
+		
+		var body : some View {
+				Form {
+						TextField("Workout Name", text: $exercise.name)
+				}
+				.toolbar {
+						ToolbarItem(placement: .cancellationAction) {
+								Button("Cancel") {
+										modelContext.delete(exercise)
+										dismiss()
+								}
+						}
+						ToolbarItem(placement: .confirmationAction) {
+								Button("Save") {
+										dismiss()
+								}
+						}
+				}
+		}
+}
+
+#Preview {
+		Color.clear
+				.sheet(isPresented: .constant(true)) {
+						AddExercise(exercise: Exercise(""))
+				}
+}