[IMP] doc: add missing attributes

Add documentation about model attributes
_parent_name
_date_name
_fold_name
_translate

Forward port of #32559 to 13.0

closes odoo/odoo#37840

Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

doc/reference/orm.rst

@@ -697,6 +697,7 @@ Model Reference
 
         :type: bool
 
+
     .. attribute:: _check_company_auto
 
         On write and create, call ``_check_company`` to ensure companies
@@ -704,6 +705,34 @@ Model Reference
         as attribute.
         (default: ``False``)
 
+     .. attribute:: _parent_name
+
+         Alternative field to use as parent, used by indexed storage of the tree structure of records
+        (default: ``'parent_id'``)
+
+         :type: str
+
+     .. attribute:: _date_name
+
+         Alternative field to use for default calendar view
+        (default: ``'date'``)
+
+         :type: str     
+
+     .. attribute:: _fold_name
+
+         Alternative field to determine folded groups in kanban views
+        (default: ``'fold'``)
+
+         :type: str 
+
+     .. attribute:: _translate
+
+         False disables translations export for this model
+        (default: ``True``)
+
+         :type: bool
+
     .. rubric:: CRUD
 
     .. automethod:: create