stock_usability: clean-up zero-qty quants when opening quants from stock.location

When accessing stock.move.line from the show reservation on quants, in
the form view of stock.move.line, have a link to the picking

stock_usability/models/stock_location.py

@@ -0,0 +1,14 @@
+# Copyright 2023 Akretion France (http://www.akretion.com)
+# @author Alexis de Lattre <alexis.delattre@akretion.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class StockLocation(models.Model):
+    _inherit = 'stock.location'
+
+    def action_show_quants(self):
+        self.ensure_one()
+        action = self.env['stock.quant']._get_quants_action(domain=[('location_id', 'child_of', self.id)])
+        return action