**Is your feature request related to a problem? Please describe.**
It's frustrating there's no option to turn off decompress. There are situations where you want to do this. Ex: having a service that collects data, but doesn't analyze it. which then passes to another service immediately/eventually.

While data is waiting or in traffic to next stop, it should stay compressed. The difference in byte size is huge (for me, 60MB vs 1-2MB). 

**Describe the solution you'd like**
Add an option to the request to not automatically decompress for me. I'm a big boy, I can handle it myself later.

**Describe alternatives you've considered**
There are none except user another lib or write own http req (which is ridiculous just to turn off a auto feature).


I can submit a PR if no one else wants to do it (it's not hard to add). But let me know how you'd like the option to be passed in? An extra options key? `axios({ url: ..., method: ..., decompress: false })` , or adding option to an existing option?


lib/adapters/http.js
if (config.timeout) {
      
      
      
      
      
      req.setTimeout(config.timeout, function handleRequestTimeout() {
        req.abort();
        reject(createError('timeout of ' + config.timeout + 'ms exceeded', config, 'ECONNABORTED', req));
      });
    }
    if (config.cancelToken) {
      
      config.cancelToken.promise.then(function onCanceled(cancel) {
        if (req.aborted) return;
        req.abort();
        reject(cancel);
      });
    }
    
    if (utils.isStream(data)) {
      data.on('error', function handleStreamError(err) {
        reject(enhanceError(err, config, null, req));
      }).pipe(req);
    } else {
      req.end(data);
    }
  });
};