Clean up SVG files and update logos

- Removed unnecessary XML and DOCTYPE declarations from SVG files.
- Eliminated comments within SVG files for cleaner output.
- Trimmed leading and trailing whitespace from SVG content.
- Ensured all SVG files end with a newline character.
- Updated multiple logo SVG files including WireGuard, Wise, WOG, Yahoo, and others to conform to the new standards.
- Enhanced the update-data.js script to automate the cleanup process for SVG files.

public/images/flags/bf.svg

@@ -4,4 +4,4 @@
     <path fill="#35a100" d="M639.6 480H0V240.2h639.6z"/>
     <path fill="#fff300" d="m254.6 276.2-106-72.4h131L320 86.6 360.4 204l131-.1-106 72.4 40.5 117.3-106-72.6L214 393.4"/>
   </g>
-</svg>
+</svg>