Create splunk_dtp_query.txt

Initial import of Splunk query that allows organizations to parse and search "Dr. Watson" or "Windows Error Reporting" logs to search for USB devices that have been connected to their network. 

These logs can be collected by a local WER collection server, via Proxy logs, IPS, or passive listening with Wireshark for requests going to http://watson.microsoft.com, or https://watson.telemetry.microsoft.com