feat: Update client logos and testimonials, enhance feature descriptions, and improve layout

- Replaced client logos in _index.md with new entries.
- Updated testimonials section to improve clarity and relevance.
- Enhanced feature descriptions in generation-documents.md, rapports-rgpd.md, rapports-statistiques.md, rendez-vous.md, suivi-accompagnements.md, suivi-decisions.md, and suivi-usagers.md for better user understanding.
- Added new images to various feature sections to enrich visual content.
- Introduced new sector pages for "Grandes Collectivités" and "Services et associations" with tailored content.
- Updated CSS for better styling and responsiveness.
- Improved carousel and client logos shortcode for better performance and visual appeal.
- Removed outdated screenshots and replaced hero image with a new format.

hugo.toml

@@ -127,6 +127,12 @@ pagination = { pagerSize = 6, path = "page" }
     name = "Secteur d'activités"
     weight = 2
     url = "/sector"
+    [menu.main.params]
+      has_submenu = true
+      submenu = [
+        { name = "Grandes Collectivités", url = "/sector/collectivities" },
+        { name = "Services et associations", url = "/sector/associations" },
+      ]  
   [[menu.main]]
     name = "Tarification"
     url = "/pricing"