feat(quote-carousel): add QuoteCarouselBlock component and related types

- Introduced a new QuoteCarouselBlock component for displaying rotating quotes.
- Added QuoteCarouselBlockData interface to define the structure of the quote carousel data.
- Updated existing components and types to integrate the new quote carousel functionality.
- Enhanced blog-utils to support filtering posts by tags more effectively.
- Made various UI improvements in the Footer and PostCard components for better user experience.

src/lib/components/ContentRows.svelte

@@ -7,6 +7,7 @@
   import ImageGalleryBlock from "./blocks/ImageGalleryBlock.svelte";
   import YoutubeVideoBlock from "./blocks/YoutubeVideoBlock.svelte";
   import QuoteBlock from "./blocks/QuoteBlock.svelte";
+  import QuoteCarouselBlock from "./blocks/QuoteCarouselBlock.svelte";
   import LinkListBlock from "./blocks/LinkListBlock.svelte";
   import PostOverviewBlock from "./blocks/PostOverviewBlock.svelte";
   import SearchableTextBlock from "./blocks/SearchableTextBlock.svelte";
@@ -27,6 +28,7 @@
     ImageGalleryBlockData,
     YoutubeVideoBlockData,
     QuoteBlockData,
+    QuoteCarouselBlockData,
     LinkListBlockData,
     PostOverviewBlockData,
     SearchableTextBlockData,
@@ -112,6 +114,8 @@
                 <YoutubeVideoBlock block={item as YoutubeVideoBlockData} />
               {:else if blockType(item) === "quote"}
                 <QuoteBlock block={item as QuoteBlockData} />
+              {:else if blockType(item) === "quote_carousel"}
+                <QuoteCarouselBlock block={item as QuoteCarouselBlockData} />
               {:else if blockType(item) === "link_list"}
                 <LinkListBlock block={item as LinkListBlockData} />
               {:else if blockType(item) === "post_overview"}