Adding functionality to view QueryMetrics

[KevinMcDonnell-BC]

I was writing a WPF based app to view Cosmos Queries when I came across Doobry and it was almost exactly what I was looking for. The only thing missing was the ability to view Query Metrics as I needed to be able to identify why indexes weren't getting applied. This pull request adds the ability to view query metrics as an additional line in the list of documents.