[ADD] web_widget_radio_tree: widget to use input radio in a tree view inside a form, in order to allow mark only one record

web_widget_radio_tree/static/src/xml/widget.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<templates>
+    <t t-name="RadioTree">
+        <span class="oe_form_field oe_form_field_boolean oe_form_field_boolean_radio"
+              t-att-style="widget.node.attrs.style">
+            <input type="radio"
+                t-att-id="widget.id_for_label"
+                t-att-name="widget.name"
+                t-att-tabindex="widget.node.attrs.tabindex"
+                t-att-autofocus="widget.node.attrs.autofocus"
+                class="field_boolean"/>
+        </span>
+    </t>
+</templates>