Add new sector layout and shortcodes, update value card icons, and replace customer logos

- Created a new sector layout file for main content display.
- Added a sector-section shortcode for a features section with customizable title and description.
- Updated value card shortcode to support image icons and SVG icons.
- Added multiple new logo images for various clients and removed outdated customer logos.

themes/chill-theme/layouts/shortcodes/sector-section.html

@@ -0,0 +1,17 @@
+{{/* Features Section Wrapper Shortcode */}}
+{{ $title := .Get "title" | default "Powerful Features for Modern Teams" }}
+{{ $description := .Get "description" | default "Discover how our platform helps you understand and optimize every aspect of your user experience." }}
+
+<section class="section">
+    <div class="container">
+        <div class="text-center max-w-3xl mx-auto mb-16">
+            <h2 class="text-3xl md:text-4xl font-bold mb-6">{{ $title }}</h2>
+            <p class="text-xl text-gray-600">{{ $description | markdownify }}</p>
+        </div>
+
+        <!-- Feature Grid -->
+        <div class="text-center max-w-3xl mx-auto mb-16">
+            {{ .Inner | safeHTML  }}
+        </div>
+    </div>
+</section>