Implement an equivalent to AsyncTimeOutAttribute

[yishaigalatzer]

We would like to be able to signal a timeout to the code below this. The design here is to call request.Abort

Related to aspnet/HttpAbstractions#197

[yishaigalatzer]

This will be a resource filter (wrapping)

[kichalla]

Scenarios:

• Client disconnects while request is being executed on the server.
  Example:
  An html page could be making ajax calls and when user navigates to other pages, the previous page's ajax calls could cause disconnects.
• Execution timeout set on an action. Once the time elapses the given timeout value, the request should be aborted.

[kichalla]

This feature has been cut, so closing it.