Flash status: scan PICOBIN blocks for per-slot validity and version

lib/client/types.go

@@ -63,9 +63,17 @@ type RequestReboot struct{}
 type ResponseReboot struct{}
 
 type RequestFlashStatus struct{}
+
+type SlotInfo struct {
+	Valid   bool
+	Version uint32
+	HashOK  bool
+}
+
 type ResponseFlashStatus struct {
 	BootPartition int8
-	BootType      uint8
+	SlotA         SlotInfo
+	SlotB         SlotInfo
 }
 
 type RequestListTests struct{}