Implement a Range header support for streaming/seeking video/audio files

[mysliwiec-tech]

Is your feature request related to a problem? Sometimes it would be required for a gateway to return a specific range of bytes of the big file served eg. when we have a video or an audio and we would like to start playing it from a specific point of time. It will be possible due to accepting the Range HTTP headers in the requests and sending back the response with HTTP 206 with Content-Range header. I'm not really technical, but this is what might be needed in my understanding.

Describe the solution you'd like The technical details are explained in the issue of another project here and there

Additional context Raising this feature request as it was suggested by @andrewxhill and @carsonfarmer on Slack

[mysliwiec-tech]

I think what is required to do is to redefine the reader in the DataAtPath function in ipfs/main.go line 50, with different reader which will accept range parameter.