add crude encoding of PSN chunks

internal/encoders/data_tracker_list_chunk.go

@@ -0,0 +1,11 @@
+package encoders
+
+func EncodeDataTrackerListChunk(trackerChunks [][]byte) []byte {
+	trackerChunkBytes := []byte{}
+
+	for _, trackerChunk := range trackerChunks {
+		trackerChunkBytes = append(trackerChunkBytes, trackerChunk...)
+	}
+
+	return EncodeChunk(0x0001, trackerChunkBytes, true)
+}