RFC: LIMS Stock

# lims_stock

Track specimens moves with the inventory module

Deps: lims, stock

## product.template

- [ ] is_specimen: Boolean --> Automatically track by serial number.

## lims.specimen

- product_id: m2o to product.product
- lot_id: m2o to stock.lot
- location_id: m2o to stock.location, current location of the specimen, computed automatically from the lot_id