add UI for adding exercises to workouts

WorkoutsPlus/Exercise/ExerciseLibrary.swift

@@ -14,6 +14,8 @@ struct ExerciseLibrary: View {
 		
 		@State private var newExercise: Exercise?
 		
+		// TODO: Add search bar to the top
+		
 		var body: some View {
 				NavigationSplitView {
 						Group {
@@ -50,6 +52,7 @@ struct ExerciseLibrary: View {
 										AddExercise(exercise: exercise)
 								}
 								// TODO: It's possible to add a boolean here ("Terms accepted y/n"). Maybe add this for empty string
+								.presentationDetents([.medium])
 								.interactiveDismissDisabled()
 						}
 				} detail: {