Bundle native libraries as part of the executable

[happybeing]

We currently use pkg to create an executable, and I did some experiments with nexe for comparison.

One of the issues with both is that of bundling 'native' libraries (platform specific binaries/dlls). nexe seems a bit better at this in some ways, but I decided to stay with pkg because there were some outstanding problems with nexe and even if I solved those it still couldn't get around the fundamental problem that naive binaries need to exist on the file system, so need to be extracted before they can be used, even if to start with they are bundled in the executable.

So this issue has two elements:

1. At least bundle everything into the executable so we can avoid distributing a zip which the user has to extract themselves. So the executable would do this when run.

2. Do the impossible and also avoid the need to create files on the file system!

The following pkg issue attempts to solve 1) but also suggests 2) might also be possible:

vercel/pkg#329

cc @bzee, @lukas

[happybeing]

Closing in favour of issue #3 in new SAFE Drive repo as this repo is no longer in use.