Initial cloud-services repo - gateway service + pkg modules

pkg/utils/bytearray/bytearray.go

@@ -0,0 +1,13 @@
+package bytearray
+
+import "encoding/binary"
+
+func FromUInt64(input uint64) []byte {
+	b := make([]byte, 8)
+	binary.LittleEndian.PutUint64(b, input)
+	return b
+}
+
+func ToUInt64(input []byte) uint64 {
+	return binary.LittleEndian.Uint64(input)
+}