feat(labels): add human-readable labels for each member

sealed_sector_health/health.go

@@ -11,3 +11,15 @@ const (
 	ErrorInvalidLength          // sector exists, but length is incorrect
 	ErrorMissing                // sector no longer exists
 )
+
+var labels = [...]string{
+	"Unknown",
+	"Ok",
+	"ErrorInvalidChecksum",
+	"ErrorInvalidLength",
+	"ErrorMissing",
+}
+
+func (el Health) String() string {
+	return labels[el]
+}

sealing_state/state.go

@@ -10,3 +10,15 @@ const (
 	Sealing       // sector is currently being sealed
 	Sealed        // sector has been sealed successfully
 )
+
+var labels = [...]string{
+	"Unknown",
+	"Pending",
+	"Failed",
+	"Sealing",
+	"Sealed",
+}
+
+func (el State) String() string {
+	return labels[el]
+}