It could be quite difficult to implement the required behavior.

The slightly different approach is to use related lists feature. See, for example, here

Discription of related lists

You can use this approach to modify the display form of Facture list. This should solve the problem with views but still need to write code for creating of related Ligne_Facture records.

As a result you get linked lists but creation should still require multiply steps to create connected records.

The behavior you prefer could only be achieved with custom development ot using InfoPath forms

It could be quite difficult to implement the required behavior.

The slightly different approach is to use related lists feature. See, for example, here

Discription of related lists

You can use this approach to modify the display form of Facture list. This should solve the problem with views but still need to write code for creating of related Ligne_Facture records.

As a result you get linked lists but creation should still require multiply steps to create connected records.

The behavior you prefer could only be achieved with custom development or using InfoPath forms