Refactor logo image handling across components

- Introduced utility functions to determine the base directory and image URL for logos based on their collection.
- Updated `Actions.svelte`, `CardFull.svelte`, `CardMiddle.svelte`, `CardSmall.svelte`, and `CardTiny.svelte` to use the new utility functions for generating image paths.
- Ensured that the correct image format (SVG, PNG, JPG) is used based on the logo's properties and active color sets.

public/images/flags/cg.svg

@@ -0,0 +1,12 @@
+<svg xmlns="http://www.w3.org/2000/svg" id="flag-icons-cg" viewBox="0 0 640 480">
+  <defs>
+    <clipPath id="cg-a">
+      <path fill-opacity=".7" d="M-79.5 32h640v480h-640z"/>
+    </clipPath>
+  </defs>
+  <g fill-rule="evenodd" stroke-width="1pt" clip-path="url(#cg-a)" transform="translate(79.5 -32)">
+    <path fill="#ff0" d="M-119.5 32h720v480h-720z"/>
+    <path fill="#00ca00" d="M-119.5 32v480l480-480z"/>
+    <path fill="red" d="M120.5 512h480V32z"/>
+  </g>
+</svg>