Add full support for Darwin binaries that are signed, stored as zip a…

…rchives

and then have their packages notarized. This is done outside of the normal
goreleaser process so adding checksums (and adding the package to the upload
manifest) was a PITA, also, .tar.gz archives are still produced and I can't
figure out how to prevent them from being added to the bundle

fix typo in notarytool invocation

try building everything on darwin

update documentation for hostmask

introduce hostmask plus bugfixes

 - introduce hostmask which currently works for 'net view' and 'enumerate'
 - add documentation page about hostmask
 - fix 'v6 to arpa' which was broken and being clobbered by 'v4 to arpa'

first pass at releasing via actions and goreleaser