Handle prebuildify and node-pre-gyp, don't invoke prebuild-install for packages that don't use prebuild-install

[segevfiner]

It would be nice if pkg handled packages using prebuildify, node-pre-gyp and prebuild-install better:

1. It should only invoke prebuild-install or node-pre-gyp if actually supported and used by the package or there is custom configuration where custom prebuilt binaries have been built for a package that doesn't otherwise have them, otherwise it will just error, output a warning/error for unhandled .node files that are for the wrong platform. (For unsupported packages, users can place the right .node files themselves ATM, so it can still work even if unsupported directly by pkg).
2. It should handle prebuildify and package only the binaries for the right platform, it currently packages all of them, which can increate binary size significantly, and there is not per target ignore mechanism to workaround it currently. It should also try to correctly package needed additional vendored DLLs that are used by the .node module, e.g. are alongside it, and only the ones for the correct platform.
3. It should handle node-pre-gyp packages.

[robertsLando]

PR?

[segevfiner]

I will, if I will have time, and won't forget. 😉