feat(image): enhance image handling with new properties and responsive support

- Updated PostEntry type to include _rawImageUrl and _imageFocal for improved image management.
- Refactored image handling in various components to utilize the new properties, ensuring better focal point support and responsive image rendering.
- Introduced warmResponsiveImage function for pre-fetching image variants to optimize loading performance.
- Replaced CmsImage component with RustyImage in multiple blocks for consistent image processing.

src/routes/post/[slug]/+page.svelte

@@ -5,6 +5,7 @@
   import EventBadges from '$lib/components/EventBadges.svelte';
   import EventMap from '$lib/components/EventMap.svelte';
   import Accordion from '$lib/components/Accordion.svelte';
+  import RustyImage from '$lib/components/RustyImage.svelte';
   import { t, T } from '$lib/translations';
   import type { PageData } from './$types';
 
@@ -32,7 +33,21 @@
 {/if}
 
 <div class="md:flex gap-2 items-end">
-  {#if data.postImageUrl}
+  {#if data.rawPostImageUrl}
+    <div class="overflow-hidden inline-block my-4 border border-white self-start ring-1 ring-black/50 shadow-lg">
+      <RustyImage
+        src={data.rawPostImageUrl}
+        focal={data.postImageFocal}
+        width={150}
+        height={200}
+        fit="cover"
+        alt=""
+        class="block object-cover"
+        loading="eager"
+        fetchpriority="high"
+      />
+    </div>
+  {:else if data.postImageUrl}
     <div class="overflow-hidden inline-block my-4 border border-white self-start ring-1 ring-black/50 shadow-lg">
       <img
         src={data.postImageUrl}