Return 0 code on help command and pass cli arguments to zig build run

[iddev5]

While working on #44 I noticed that

1. zig build run -- --help is returning 1 while it should return 0 as its a successful execution of a command. After changing it, I found that,
2. Build.zig is not passing CLI arguments to zig build run in the first place 😅

[marler8997]

Looks fine, any idea why your PR doesn't trigger a run?

My guess is it has something to do with this line: https://github.com/marler8997/zigup/blob/master/.github/workflows/artifact.yml#L2

[iddev5]

Indeed that's it, it needs to be changed to on: [push, pull_request]

[marler8997]

Ok could you add a commit to this PR that changes that, then I can see the tests run and merge it.