Fix Telegram avatar proxy headers

src/server.ts

@@ -41,6 +41,8 @@ app.get('/telegram/photo/:fileId', async (request, reply) => {
   const photo = await fetchTelegramPhoto(params.fileId);
   reply.header('content-type', photo.contentType);
   reply.header('cache-control', 'public, max-age=86400');
+  reply.header('access-control-allow-origin', '*');
+  reply.header('cross-origin-resource-policy', 'cross-origin');
   return reply.send(photo.bytes);
 });