title: Flutter firebase storage CORS issue
body: <p>I'm using a free plan of firebase storage. All working good but the image not loading on my flutter web.</p>
  <p>I'm getting this error.</p>
  <pre><code>Access to XMLHttpRequest at 'https://firebasestorage.googleapis.com/v0/b/sap-app-8318e.appspot.com/o/cover%2Fimage_cropper_028D7F16-0161-4E90-B40D-EE47D310F322-5339-000003697F67306C.jpg?alt=media&amp;token=313475a9-9728-4e61-97da-f5d5534bb008' from origin 'https://sap.nextcardpro.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
  firebasestorage.googleapis.com/v0/b/sap-app-8318e.appspot.com/o/cover%2Fimage_cropper_028D7F16-0161-4E90-B40D-EE47D310F322-5339-000003697F67306C.jpg?alt=media&amp;token=313475a9-9728-4e61-97da-f5d5534bb008:1
  </code></pre>
  <p>I searched on google everyone told need to allow CORS Access from firebase, but how can I have to add it. but how can I add it to my free firebase plan?</p>
  <pre><code>[
      {
        &quot;origin&quot;: [&quot;*&quot;],
        &quot;responseHeader&quot;: [&quot;Content-Type&quot;],
        &quot;method&quot;: [&quot;GET&quot;, &quot;HEAD&quot;, &quot;DELETE&quot;],
        &quot;maxAgeSeconds&quot;: 3600
      }
  ]
  </code></pre>