fail2ban: drop python3-pkg-resources dependency

fail2ban: drop python3-pkg-resources dependency

The python3-pkg-resources package does not exist in OpenWrt.
The only distutils/setuptools usage in fail2ban 1.1.0 is in
filterpyinotify.py and filtersystemd.py, both of which are
optional backends not available on OpenWrt. They are loaded
lazily via ImportError-guarded calls and the default auto
backend falls through to polling without them.

Also add test.sh with basic import and CLI smoke test.

Add me as maintainer.

Signed-off-by: Alexandru Ardelean <redacted>