Missed a header

Former-commit-id: 08e0d97ba3

include/Kyoto/Streams/StreamSupport.hpp

@@ -0,0 +1,9 @@
+#ifndef _STREAMSUPPORT
+#define _STREAMSUPPORT
+#include <types.h>
+
+static inline uint min_containing_bytes(uint bits) {
+  return (bits / 8) + ((bits % 8) != 0);
+}
+
+#endif // _STREAMSUPPORT