Support system info request

[chipsenkbeil]

Maybe called "environment." Returns variety of data including:

1. path separator
2. os name (https://doc.rust-lang.org/std/env/consts/constant.OS.html)
3. family (https://doc.rust-lang.org/std/env/consts/constant.FAMILY.html)
4. arch (https://doc.rust-lang.org/std/env/consts/constant.ARCH.html)
5. cwd

[chipsenkbeil]

Resolved by 956f7e0

[github-actions]

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