[FIX] theme_*: fix s_text_cover design

This commit has two main goals:

1. Adapt the copy of the `s_text_cover` snippet to fit each theme

2. Introduce custom images for each themes, as the `s_text_cover` was
   always using the same image until now

This commit also fixes some conflicting classes due to a change of
`background-color` in the default snippet.

task-4119904
Part of task-3619705

Part-of: odoo/design-themes#919
Related: odoo/odoo#180736
Signed-off-by: Benjamin Vray (bvr) <bvr@odoo.com>
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

theme_kiddo/__manifest__.py

@@ -52,6 +52,7 @@
         'views/snippets/s_wavy_grid.xml',
         'views/snippets/s_shape_image.xml',
         'views/snippets/s_images_constellation.xml',
+        'views/snippets/s_text_cover.xml',
         'views/new_page_template.xml',
     ],
     'images': [

theme_kiddo/views/images_library.xml

@@ -389,5 +389,10 @@
     <field name="name">website.s_images_constellation_default_image_2</field>
     <field name="url">/theme_kiddo/static/src/img/snippets/s_images_constellation_default_image_2.jpg</field>
 </record>
+<record id="s_text_cover_default_image" model="theme.ir.attachment">
+    <field name="key">website.s_text_cover_default_image</field>
+    <field name="name">website.s_text_cover_default_image</field>
+    <field name="url">/theme_kiddo/static/src/img/snippets/s_banner.jpg</field>
+</record>
 
 </odoo>

theme_kiddo/views/snippets/s_text_cover.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+<template id="s_text_cover" inherit_id="website.s_text_cover">
+    <!-- Title -->
+    <xpath expr="//h1" position="replace" mode="inner">
+        Discover<br/>our nursery
+    </xpath>
+    <!-- Paragraph -->
+    <xpath expr="//p[hasclass('lead')]" position="replace" mode="inner">
+        <br/>Discover our nursery’s welcoming environment and engaging programs with ease. Our platform helps you explore our activities, meet our staff, and see how we make early learning fun and enriching for your child.<br/>
+    </xpath>
+    <!-- Button -->
+    <xpath expr="//a[hasclass('btn')]/t" position="replace" mode="inner">
+        Learn more
+    </xpath>
+</template>
+
+</odoo>