feat(json): provide JSON marshal/unmashal functions for debugging

bindings.go

@@ -53,6 +53,20 @@ func (s *SortedSectorInfo) Values() []SectorInfo {
 	return s.f
 }
 
+// MarshalJSON JSON-encodes and serializes the SortedSectorInfo.
+func (s SortedSectorInfo) MarshalJSON() ([]byte, error) {
+	return json.Marshal(s.f)
+}
+
+// UnmarshalJSON parses the JSON-encoded byte slice and stores the result in the
+// value pointed to by s.f. Note that this method allows for construction of a
+// SortedSectorInfo which violates its invariant (that its SectorInfo are sorted
+// in some defined way). Callers should take care to never provide a byte slice
+// which would violate this invariant.
+func (s *SortedSectorInfo) UnmarshalJSON(b []byte) error {
+	return json.Unmarshal(b, &s.f)
+}
+
 type SectorInfo struct {
 	SectorID uint64
 	CommR    [CommitmentBytesLen]byte