init: Euro-Office Odoo 16.0 modules

Based on onlyoffice_odoo by Ascensio System SIA (ONLYOFFICE, LGPL-3).
Rebranded and adapted for Euro-Office by bring.out d.o.o.

Modules:
- eurooffice_odoo: base integration
- eurooffice_odoo_templates: document templates
- eurooffice_odoo_oca_dms: OCA DMS integration (replaces Enterprise documents)

All references renamed: onlyoffice -> eurooffice, ONLYOFFICE -> Euro-Office.
Original copyright notices preserved.

odoo-bringout-eurooffice-eurooffice_odoo/eurooffice_odoo/utils/jwt_utils.py

@@ -0,0 +1,29 @@
+#
+# (c) Copyright Ascensio System SIA 2024
+#
+
+import datetime
+
+import jwt
+
+from odoo.addons.eurooffice_odoo.utils import config_utils
+
+
+def is_jwt_enabled(env):
+    return bool(config_utils.get_jwt_secret(env))
+
+
+def encode_payload(env, payload, secret=None):
+    if secret is None:
+        secret = config_utils.get_jwt_secret(env)
+    now = datetime.datetime.utcnow()
+    exp = now + datetime.timedelta(hours=24)
+    payload["iat"] = int(now.timestamp())
+    payload["exp"] = int(exp.timestamp())
+    return jwt.encode(payload, secret, algorithm="HS256")
+
+
+def decode_token(env, token, secret=None):
+    if secret is None:
+        secret = config_utils.get_jwt_secret(env)
+    return jwt.decode(token, secret, algorithms=["HS256"])