[IMP] sql_export : Add last_run datetime field

This may be quite usefull to detect osbolete queries not used anymore in order to remove it

sql_export/models/sql_export.py

@@ -19,6 +19,7 @@ class SqlExport(models.Model):
 
     use_properties = fields.Boolean(compute="_compute_use_properties")
     query_properties_definition = fields.PropertiesDefinition("Query Properties")
+    last_run = fields.Datetime()
 
     encoding = fields.Selection(
         [

sql_export/views/sql_export_view.xml

@@ -72,6 +72,7 @@
         <field name="mode">primary</field>
         <field name="arch" type="xml">
             <field name="state" position="after">
+                <field name="last_run" />
                 <button
                     name="export_sql_query"
                     string="Execute Query"

sql_export/wizard/wizard_file.py

@@ -63,6 +63,7 @@ class SqlFileWizard(models.TransientModel):
                 % {"name": sql_export.name, "date": date, "extension": extension},
             }
         )
+        sql_export.write({"last_run": fields.Datetime.now()})
         action = {
             "name": "SQL Export",
             "type": "ir.actions.act_url",