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/doc/index.rst

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+Prerequisites
+=============
+
+To be able to work with office files within Odoo, you will need an instance of Euro-Office Docs. You can install the `self-hosted version`_ of the editors (free Community build or scalable Enterprise version), or opt for `Euro-Office Docs`_ Cloud which doesn't require downloading and installation.
+
+Euro-Office app configuration
+============================
+
+After the app installation, adjust its settings within your Odoo (*Home menu -> Settings -> Euro-Office*).
+In the **Document Server Url**, specify the URL of the installed Euro-Office Docs or the address of Euro-Office Docs Cloud.
+
+**Document Server JWT Secret**: JWT is enabled by default and the secret key is generated automatically to restrict the access to Euro-Office Docs. if you want to specify your own secret key in this field, also specify the same secret key in the Euro-Office Docs `config file`_ to enable the validation.
+
+**Document Server JWT Header**: Standard JWT header used in Euro-Office is Authorization. In case this header is in conflict with your setup, you can change the header to the custom one.
+
+In case your network configuration doesn't allow requests between the servers via public addresses, specify the Euro-Office Docs address for internal requests from the Odoo server and vice versa.
+
+If you would like the editors to open in the same tab instead of a new one, check the corresponding setting "Open file in the same tab".
+
+.. image:: settings.png
+    :width: 800
+
+
+Contact us
+==========
+
+If you have any questions or suggestions regarding the Euro-Office app for Odoo, please let us know at https://forum.eurooffice.com
+
+.. _self-hosted version: https://www.eurooffice.com/download-docs.aspx
+.. _Euro-Office Docs: https://www.eurooffice.com/docs-registration.aspx
+.. _config file: https://api.eurooffice.com/docs/docs-api/additional-api/signature/