HBSD: Add new port hardenedbsd/kernel-nodebug

Merged Loic requested to merge loic/ports:kernel-nodebug into hardenedbsd/main
Added the HARDENEDBSD-NODEBUG kernel to the ports to provide a
kernel package that can be used as a rescue or for performance testing[1].

This port is based on os/kernel* ports of kmoore (Kris Moore), thanks to him.

[1] https://klarasystems.com/articles/evaluating-freebsd-current-for-production-use/

Signed-off-by: Loic <loic.f@hardenedbsd.org>

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