Add support for parsing the hostnames we're going to use on the Pis

Change-Id: Ifee2e2066d7d3034bdf9aece2983922d5c636a0f
diff --git a/aos/network/team_number.h b/aos/network/team_number.h
index 6eb1335..618affb 100644
--- a/aos/network/team_number.h
+++ b/aos/network/team_number.h
@@ -28,6 +28,8 @@
 
 std::optional<uint16_t> ParseRoborioTeamNumber(const std::string &hostname);
 
+std::optional<uint16_t> ParsePiTeamNumber(const std::string &hostname);
+
 }  // namespace team_number_internal
 }  // namespace network
 }  // namespace aos