[ADD] web_widget_url_advanced

web_widget_url_advanced/readme/USAGE.rst

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+Use `url` widget as you do usually, then add an extra parameter `text_field`
+to indicate which field (present in the view already) must be used for the anchor text.
+
+
+.. code-block:: xml
+
+    <field name="some_url" widget="url" text_field="another_field" />
+
+M2O fields are supported: `display_name` is used automatically.
+
+
+For example, in the partner form,
+if you want to display the website link with partner's name as anchor you can do:
+
+
+.. code-block:: xml
+
+    <field name="website" widget="url" text_field="name" placeholder="e.g. www.odoo.com"/>
+
+This is going to change the rendering from
+
+.. figure:: ../static/description/before.png
+
+
+to
+
+.. figure:: ../static/description/after.png