Proxy original Neos URL, not just Base URI

[sbruggmann]

Would it be possible to keep the original resource urls?
This would make a migration easier because no assets need to be redirected, etc.

Example

Before switching to gcs:
client.com/_Resources/Persistent/4/c/f/e/4cfe35...57a2/Uploaded.jpg

After switching to gcs:
storage.googleapis.com/bucket-name/4cfe35...57a2/Uploaded.jpg

After using custom Base URI:
client.com/bucket-name/4cfe35...57a2/Uploaded.jpg
And nginx needs a proxy like

location ~* ^/bucket-name/(.*)$ {
  proxy_pass https://storage.googleapis.com;
}

And we need to redirect the old requests like

location ~* ^/_Resources/Persistent/[0-9a-z]/[0-9a-z]/[0-9a-z]/[0-9a-z]/(.*)$ {
  return 301 https://storage.googleapis.com/bucket-name/$1;
}

But if we could still could have the original Neos url:
client.com/_Resources/Persistent/4/c/f/e/4cfe35...57a2/Uploaded.jpg
Nginx could proxy the requests directly like

location ~* ^/_Resources/Persistent/[0-9a-z]/[0-9a-z]/[0-9a-z]/[0-9a-z]/(.*)$ {
  rewrite ^/_Resources/Persistent/[0-9a-z]/[0-9a-z]/[0-9a-z]/[0-9a-z]/(.*)$ /bucket-name/$1 break;
  proxy_pass https://storage.googleapis.com;
}