Provides an IWebHookReceiver implementation which supports WebHooks generated by Visual Studio Team Services. The corresponding WebHook URI is of the form 'https://<host>/api/webhooks/incoming/vsts/{id}?code={code}'. For security reasons the WebHook URI must be an https URI and contain a 'code' query parameter with the same value as configured in the 'MS_WebHookReceiverSecret_VSTS' application setting, optionally using IDs to differentiate between multiple WebHooks, for example 'secret0, id1=secret1, id2=secret2'. The 'code' parameter must be between 32 and 128 characters long. For details about Visual Studio Team Services WebHooks, see https://www.visualstudio.com/en-us/get-started/integrate/service-hooks/webhooks-and-vso-vs.