Add Flags Assets and Update Configuration

- Introduced multiple SVG flag assets to the project, enhancing the visual representation of country flags.
- Updated the configuration file to include a new path for the flags assets, ensuring proper access and organization.
- Modified the main application to accommodate the new flags path, improving the overall asset management in the application.

cmd/web/assets/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>