AWS download URLs need extra handling

[jrburke]

Looks like AWS wants something fancier done for downloading files from them.

Test:

volo add https://github.com/gaye/dav/releases/download/v1.0.3/dav.zip#dav.js

<?xml version="1.0" encoding="UTF-8"?>
<Error><Code>AuthorizationQueryParametersError</Code><Message>Query-string authentication version 4 requires the X-Amz-Algorithm, X-Amz-Credential, X-Amz-Signature, X-Amz-Date, X-Amz-SignedHeaders, and X-Amz-Expires parameters.</Message>
<RequestId>80D47BFAAC204179</RequestId>
<HostId>0HariKX8ScYk17bnjlLAZNTy3qgstjggzWTYpkh2zxYuudRhBKxn+fBCE7z/bkTFc7B9H94tD/s=</HostId>
</Error>

Trying to use curl for the same action also gets the same error.