feat: add tsdown icon (#3418)

Signed-off-by: Andrin Haldner <88372994+AHaldner@users.noreply.github.com>

Author: AHaldner

icons/tsdown.svg

@@ -3488,6 +3488,19 @@ export const fileIcons: FileIcons = {
       fileExtensions: ['instructions.md', 'instruction.md'],
       clone: { base: 'lib', color: 'cyan-A700' },
     },
+    {
+      name: 'tsdown',
+      fileNames: [
+        'tsdown.config.ts',
+        'tsdown.config.mts',
+        'tsdown.config.cts',
+        'tsdown.config.js',
+        'tsdown.config.mjs',
+        'tsdown.config.cjs',
+        'tsdown.config.json',
+        'tsdown.config',
+      ],
+    },
     {
       name: 'appwrite',
       fileNames: ['appwrite.json', 'appwrite.js', 'appwrite.ts'],