test on macos too

[Anton-4]

No description provided.

[Anton-4]

@lukewilliamboswell I wanted to set up testing of the examples on macos and also ran into problems with the go example like you mentioned earlier, I tried to re-use some stuff from #173 but I'm still encountering:

+ go build -C examples/GoPlatform/platform -buildmode=c-archive -o libhost.a
+ cp examples/GoPlatform/platform/libhost.a examples/GoPlatform/platform/macos-arm64.a
+ roc build --prebuilt-platform ./examples/GoPlatform/main.roc
Undefined symbols for architecture arm64:
  "_main", referenced from:
      <initial-undefines>
ld: symbol(s) not found for architecture arm64
./examples/GoPlatform/main: No such file or directory
thread 'main' panicked at crates/compiler/build/src/program.rs:1043:17:
not yet implemented: gracefully handle `ld` (or `zig` in the case of wasm with --optimize) returning exit code Some(1)
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Can you take a look?

[Anton-4]

Looks like the tests passed because I did a bad copy-paste... I'll fix that.

[Anton-4]

Ok, now I get the Undefined symbols error:

 + roc build --prebuilt-platform ./examples/GoPlatform/main.roc
ld: Undefined symbols:
  _main, referenced from:
      <initial-undefines>
./examples/GoPlatform/main: No such file or directory
thread 'main' panicked at crates/compiler/build/src/program.rs:1043:17:
not yet implemented: gracefully handle `ld` (or `zig` in the case of wasm with --optimize) returning exit code Some(1)
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace