Features Request : Product Item

[OverStyleFR]

Is your feature request related to a problem? Please describe.
I'm always frustrated when I have to create an invoice for the same item every month.

Describe the solution you'd like
A section of product item. When you can add product or subscriptions.

Additional context
Example :

I sell mostly the same product.

So : I create the product, and when I have to create an invoice I can select the product directly. (I don't have to re-write him every time.

I sell a subscription.

So : I create a subscription, and when I have to create an invoice I can select the subscriptions directly.

[PontusTideman]

Would also love to see this in the future.

+1 on this!