[IMP] theme_*: explode masonry snippet

See community commit for details

Note: this also fixes avantgarde svg/screenshot at the same time: we
remove the s_masonry_block but add the missing carousel.

(image contribution by MANO)

closes odoo/design-themes#1020

Related: odoo/odoo#183755
Related: odoo/upgrade#6642
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>
Co-authored-by: mano-odoo <mano@odoo.com>

theme_aviato/__manifest__.py

@@ -72,7 +72,7 @@
         'website.s_quotes_carousel_demo_image_0': '/theme_aviato/static/src/img/content/s_quote_bg_1.jpg',
     },
     'configurator_snippets': {
-        'homepage': ['s_banner', 's_text_image', 's_image_text', 's_picture', 's_title', 's_masonry_block', 's_company_team', 's_showcase', 's_quotes_carousel'],
+        'homepage': ['s_banner', 's_text_image', 's_image_text', 's_picture', 's_title', 's_masonry_block_default_template', 's_company_team', 's_showcase', 's_quotes_carousel'],
     },
     'license': 'LGPL-3',
     'live_test_url': 'https://theme-aviato.odoo.com',