GetObjectTorrent API implementation

[vbakc]

Is your feature request related to a problem? Please describe.
In S3 documentation there is an endpoint which returns Torrent for an object, but it is currently not implemented by this crate.

Describe the solution you'd like
Implement GetObjectTorrent request.

Describe alternatives you've considered
Using rusoto-s3 crate, but I like this crate more.

Additional context
Add any other context or screenshots about the feature request here.

[durch]

@vbakc thanks for raising this, I'll see what I can do, I have some time over the next couple of days :)

[durch]

Turned out to be pretty trivial, let me know how if it works as expected. Released as 0.27.0-rc2

[vbakc]

@durch thank you) I'll submit bugs if there are any as soon as we get staging server running