[IMP] theme_*: extract shapes to configurator-dedicated templates

This commit extracts the pre-defined section shapes from blocks into
templates that are dedicated to being used by the configurator.

For blocks that are not used in configurator pages, the configurator
templates have not been created.

task-3381714

Part-of: odoo/design-themes#692

theme_notes/views/snippets/s_image_text.xml

@@ -5,7 +5,6 @@
     <!-- Section -->
     <xpath expr="//section" position="attributes">
         <attribute name="class" add="o_cc o_cc5 pt80 pb80" remove="pt32 pb32" separator=" "/>
-        <attribute name="data-oe-shape-data">{"shape":"web_editor/Wavy/11","flip":[]}</attribute>
     </xpath>
     <!-- Text wrapper -->
     <xpath expr="//div[hasclass('col-lg-6')][2]" position="attributes">
@@ -27,4 +26,11 @@
     </xpath>
 </template>
 
+<template id="configurator_s_image_text" inherit_id="website.configurator_s_image_text">
+    <!-- Shape option -->
+    <xpath expr="//section" position="attributes">
+        <attribute name="data-oe-shape-data">{"shape":"web_editor/Wavy/11","flip":[]}</attribute>
+    </xpath>
+</template>
+
 </odoo>