[ADD] whatsapp: basic description of the app

task-3425722

Author: jcs-odoo

content/applications/productivity.rst

@@ -8,6 +8,7 @@ Productivity
 .. toctree::
 
     productivity/discuss
+    productivity/whatsapp
     productivity/calendar
     productivity/knowledge
     productivity/iot

content/applications/productivity/whatsapp.rst

@@ -0,0 +1,22 @@
+========
+WhatsApp
+========
+
+**WhatsApp** is a popular messaging app that enables users to send texts and share media securely
+and conveniently. Businesses can use `WhatsApp Business
+<https://developers.facebook.com/products/whatsapp/>`_ to communicate with their customers, send
+documents and provide support.
+
+Connecting your Whatsapp Business Account (WABA) to your Odoo database allows you to:
+
+- Receive and reply to WhatsApp messages directly from your Odoo database
+- Send pre-approved templates that use dynamic values, such as:
+
+  - Quotations from the Sales app
+  - Receipts and invoices from the Point of Sale app
+  - Tickets from the Events app
+
+.. seealso::
+   - `Meta Business: create message templates for your WhatsApp Business account <https://www.facebook.com/business/help/2055875911147364>`_
+   - `Meta Business: connect your phone number to your WhatsApp Business account <https://www.facebook.com/business/help/456220311516626>`_
+   - `Meta Business: change your WhatsApp Business display name <https://www.facebook.com/business/help/378834799515077>`_