feat: ReadAll-Methode in ICRUDRepository und CRUDRepository implementieren

- ReadAll-Methode zur ICRUDRepository-Schnittstelle hinzugefügt, um die Abfrage aller Entitäten zu ermöglichen.
- ReadAll-Methode in der CRUDRepository-Klasse implementiert, um IQueryable<TEntity> für weitere Abfragen und Filterung bereitzustellen.

DigitalData.Core.Infrastructure/CRUDRepository.cs

@@ -49,11 +49,21 @@ namespace DigitalData.Core.Infrastructure
         /// <returns>The entity found, or null if no entity is found with the specified identifier.</returns>
         public virtual async Task<TEntity?> ReadByIdAsync(TId id) => await _dbSet.FindAsync(id);
 
+        /// <summary>
+        /// Retrieves all entities of type <typeparamref name="TEntity"/> from the database.
+        /// </summary>
+        /// <remarks>
+        /// This method returns an <see cref="IQueryable{TEntity}"/> of all entities in the database. 
+        /// The result is not tracked by the context, which improves performance when you only need to read data without making modifications.
+        /// </remarks>
+        /// <returns>An <see cref="IQueryable{TEntity}"/> containing all entities of type <typeparamref name="TEntity"/>.</returns>
+        protected virtual IQueryable<TEntity> ReadAll() => _dbSet.AsNoTracking();
+
         /// <summary>
         /// Asynchronously retrieves all entities of type TEntity.
         /// </summary>
         /// <returns>An enumerable of all entities in the database.</returns>
-        public virtual async Task<IEnumerable<TEntity>> ReadAllAsync() => await _dbSet.ToListAsync();
+        public virtual async Task<IEnumerable<TEntity>> ReadAllAsync() => await ReadAll().ToListAsync();
 
         /// <summary>
         /// Asynchronously updates an existing entity in the repository.