Log when workers send too much data

Log when workers send too much data

Summary:
While investigating RC build failures I found this line in the `hh_server` logs:
```
WARNING: you are sending quite a lot of data (32209405 bytes), which may have an adverse performance impact. If you are sending closures, double-check to ensure that they have not captured large values in their environment.
```

Let's try to get more info about this by using `HackEventLogger`.

Also, let's not dump the stack trace: it's not particularly useful given it's almost _all_ plumbing from setting up the worker.

Reviewed By: ljw1004

Differential Revision: D32293622

fbshipit-source-id: 09beaf3426effa833af60d5100904127cb75d389