misc/hashdb: fix build

add setuptools dependency to fix build. the error was:

checking for python3.11... /usr/local/bin/python3.11
checking for a version of Python >= '2.1.0'... yes
checking for the distutils Python package... no
configure: error: cannot import Python module "distutils".
Please check your Python installation. The error was:
<string>:1: DeprecationWarning: The distutils package is deprecated and slated
for removal in Python 3.12. Use setuptools or check PEP 632 for potential alternatives

Reported by: pkg fallout
Approved by: portmgr (blanket approval)