Added MacOS and Linux builds

MacOS seems to be currently unsupported in Godot 4.x HTML5 builds.

A Linux user was also having issues with the web version.

Because of that, I've added MacOS and Linux builds as downloadable files. I haven't had the opportunity to test those builds, but hopefully it helps.

There may be issues running the MacOS version due to a lack of signature. Refer to this link for help: https://docs.godotengine.org/en/stable/tutorials/export/running_on_macos.html#do...