Add windows group to triagebot

Author: spastorino

triagebot.toml

@@ -36,6 +36,16 @@ Thanks! <3
 """
 label = "ICEBreaker-Cleanup-Crew"
 
+[ping.windows]
+message = """\
+Hey Windows Group! This bug has been identified as a good "Windows candidate".
+In case it's useful, here are some [instructions] for tackling these sorts of
+bugs. Maybe take a look?
+Thanks! <3
+[instructions]: https://rust-lang.github.io/rustc-guide/notification-groups/windows.html
+"""
+label = "O-windows"
+
 [prioritize]
 label = "I-prioritize"
 prioritize_on = ["regression-from-stable-to-stable", "regression-from-stable-to-beta", "regression-from-stable-to-nightly"]