Added new endpoint for variants and temporal fix for reset cache

Core.Inventory.Provider/Contracts/IFurnitureVariantProvider.cs

@@ -63,5 +63,12 @@ namespace Core.Inventory.Provider.Contracts
         /// <param name="cancellationToken">Cancellation token.</param>
         /// <returns>The updated <see cref="FurnitureVariant"/>.</returns>
         ValueTask<FurnitureVariant> ChangeStatusAsync(string _id, StatusEnum newStatus, CancellationToken cancellationToken);
+
+        /// <summary>
+        /// Retrieves all furniture variant entities.
+        /// </summary>
+        /// <param name="cancellationToken">Cancellation token.</param>
+        /// <returns>A list of all <see cref="FurnitureVariant"/> entities.</returns>
+        ValueTask<IEnumerable<FurnitureVariant>> GetAllAsync(CancellationToken cancellationToken);
     }
 }