Create a Product Package (Virtual Product) building page

[bgenere]

Issue

Dolibarr support virtual products i.e. products made of multiple products with specific quantities. Coming to stock management it appears that these product are not virtual has all stock rules applies on actual stock figures for these products. (the stock is not calculated on demand based on quantities of components).
However it is possible to remove quantities of components when you sold a virtual product but you could not sold or you get negative stock when actual stock for virtual product is empty.

Proposed solution

A page will allow to create a set of stock movements that will fill the actual stock for the virtual product and decrease properly the component stock.

prerequisites

Need product and stock module activated.
User should be able to manage Stock and do movement.

limits

The first release will not support batch product stock.

page dynamic and presentation

On fist open the page provide the list of product package with their current stock
The list is a standard Dolibarr list with a selection box so user could select one virtual (package product)
A button Build is available when a package is selected.

Action Build package will open a form for the selected product.