Create PI Web API performance counters to monitor the crawl state of various databases
As an PI administrator I need to monitor the health of the index files created by the PI Web API Crawler. In particular, if the last crawl date has not been updated recently or other errors show up. This is currently done by manually visiting the PI Web API database page. A performance counter that reports things like "the number of databases who have not been updated in 1 hour" or "the number of databases in error" existed, we could store that info in tags and act on the crawler getting in a bad state in a proactive manner.