Change CI to GitHub actions

Use copier template from oca/oca-addons-repo-template

Target Python3.7

Adapt modules to fix few issues

attachment_azure/__manifest__.py

@@ -9,6 +9,7 @@
     "Open Source Integrators, "
     "Serpent Consulting Services, "
     "Odoo Community Association (OCA)",
+    "website": "https://github.com/camptocamp/odoo-cloud-platform",
     "license": "AGPL-3",
     "category": "Knowledge Management",
     "depends": ["base_attachment_object_storage"],
@@ -18,7 +19,6 @@
             "azure.identity"       # pip: azure-identity
         ],
     },
-    "website": "https://github.com/camptocamp/odoo-cloud-platform",
     "installable": True,
     "development_status": "Beta",
     "post_init_hook": "_post_init_hook",

attachment_azure/models/ir_attachment.py

@@ -33,9 +33,9 @@ class IrAttachment(models.Model):
     _inherit = "ir.attachment"
 
     def _get_stores(self):
-        l = ["azure"]
-        l += super(IrAttachment, self)._get_stores()
-        return l
+        stores = ["azure"]
+        stores += super(IrAttachment, self)._get_stores()
+        return stores
 
     @api.model
     def _get_blob_service_client(self):