Zig template and std args

[botantony]

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Standard args and a template for Zig project.

I am not sure what would be the best release mode, I think fast is the best option for Homebrew. I also wanted to explicitly include -fno-rosetta flag for macOS build but this code fails tests:

def std_zig_args(prefix: self.prefix, release_mode: "fast")
    args = "--prefix", prefix.to_s, "--release=#{release_mode}", "--summary", "all"
    args << "-fno-rosetta" if OS.mac?
    args
end

P.S.: on my machine tests fail on Homebrew::DevCmd::TapNew method but it failed even before these changes. Not sure how to fix it, hope it is not related.

[MikeMcQuaid]

Looks good so far, nice work!

[MikeMcQuaid]

    args << "-fno-rosetta" if OS.mac?

Should this be Intel and/or ARM only?

Look at std_cmake_args in Library/Homebrew/formula.rb vs. Library/Homebrew/extend/os/mac/formula.rb. That should be able to help you make macOS-specific logic in that file.

[MikeMcQuaid]

Thanks so much for your contribution! Without people like you submitting PRs we couldn't run this project. You rock, @botantony!