Method Push5_8

include/sonic/internal/stack.h:115–119

faster api for push 5 ~ 8 bytes.

  // faster api for push 5 ~ 8 bytes.
  sonic_force_inline void Push5_8(const char* bytes8, size_t n) {
    Grow(8);
    std::memcpy(top_, bytes8, 8);
    top_ += n;
  }

  /**
   * @brief Get the top value in the buffer.