add gym module

gym/models/project_document_group.py

@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+
+from odoo import api, fields, models, _
+
+class ProjectDocumentGroup(models.Model):
+
+    _name = 'project.document.group'
+    _description = "Documents Group"
+    _rec_name = "category_id"
+
+    # --------------------------------------------------------------------
+    # FIELDS
+    # --------------------------------------------------------------------
+
+    category_id = fields.Many2one(
+    	comodel_name="project.document.category",
+        string='Category',
+    )
+
+    document_name_ids = fields.Many2many(
+        comodel_name="project.document.name",
+        string='Documents',
+    )