[IMP] test_themes, *: carousels adaptations

*: theme_anelusia, theme_artists, theme_avantgarde, theme_cobalt,
theme_cobalt, theme_enark, theme_loftspace, theme_notes,
theme_odoo_experts, theme_bewise, theme_bistro, theme_buzzy,
theme_clean, theme_graphene, theme_nano, theme_treehouse, theme_yes,
theme_aviato, theme_beauty, theme_bookstore, theme_kea, theme_kiddo,
theme_monglia, theme_orchid, theme_paptic, theme_real_estate,
theme_vehicle, theme_zap

This commit adapts the customizations related to `s_carousel`,
s_image_gallery` and `s_quotes_carousel` since these snippets has been
redesigned in PR[1].

task-3654328
Part of task-3619705

[1]: https://github.com/odoo/odoo/pull/172727

closes odoo/design-themes#836

Related: odoo/odoo#172727
Signed-off-by: Benoit Socias (bso) <bso@odoo.com>

theme_real_estate/__manifest__.py

@@ -26,6 +26,7 @@
         'views/snippets/s_call_to_action.xml',
         'views/snippets/s_unveil.xml',
         'views/snippets/s_key_benefits.xml',
+        'views/snippets/s_carousel.xml',
         'views/new_page_template.xml',
     ],
     'images': [

theme_real_estate/views/images.xml

@@ -216,5 +216,15 @@ Check in theme_monglia's primary_variables.scss, theme.scss and theme_common's m
     <field name="name">website.s_accordion_image_default_image</field>
     <field name="url">/theme_real_estate/static/src/img/snippets/s_images_wall_05.jpg</field>
 </record>
+<record id="library_image_02" model="theme.ir.attachment">
+    <field name="key">website.library_image_02</field>
+    <field name="name">website.library_image_02</field>
+    <field name="url">/theme_real_estate/static/src/img/snippets/s_images_gallery_1.jpg</field>
+</record>
+<record id="library_image_08" model="theme.ir.attachment">
+    <field name="key">website.library_image_08</field>
+    <field name="name">website.library_image_08</field>
+    <field name="url">/theme_real_estate/static/src/img/snippets/s_images_gallery_2.jpg</field>
+</record>
 
 </odoo>

theme_real_estate/views/snippets/s_carousel.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+<template id="s_carousel" inherit_id="website.s_carousel">
+    <xpath expr="(//div[hasclass('container')])[2]" position="before">
+        <div class="o_we_bg_filter bg-white-50"/>
+    </xpath>
+    <xpath expr="(//div[hasclass('container')])[3]" position="before">
+        <div class="o_we_bg_filter bg-black-50"/>
+    </xpath>
+</template>
+
+</odoo>