message: Import signature hash type declarations from interpreter.h
  As sighashtype.h is meant only for testing for now.
diff: #define BITCOIN_SCRIPT_HASH_TYPE_H
  #include "serialize.h"
  +#include "script/interpreter.h"
  #include <cstdint>
  #include <stdexcept>
  -/** Signature hash types/flags */
  -enum {
  - SIGHASH_ALL = 1,
  - SIGHASH_NONE = 2,
  - SIGHASH_SINGLE = 3,
  - SIGHASH_FORKID = 0x40,
  - SIGHASH_ANYONECANPAY = 0x80,
  -};
  -
  /**
  * Base signature hash types
  * Base sig hash types not defined in this enum may be used, but they will be
  