[PR #2436] Add support for IBM z/OS

[suparious]

Migrated from Original PR

Original PR: dylanaraps#2436
Author: @AnthonyGiorgio
Branch: zos-support
Changes: +105/-0 lines

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Original Description

Description

This PR adds support for IBM z/OS, which has a UNIX layer similar to other operating systems. It has unique ways of obtaining the information needed for neofetch, and this PR implements some of them.

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This issue was automatically migrated from the archived dylanaraps/neofetch repository.
The code from the original PR can be cherry-picked or the author can submit a new PR to this fork.

[suparious]

Upstream PR code unavailable — the source fork/branch was deleted when dylanaraps/neofetch was archived. Please re-submit as a new PR to this maintained fork. Closing as 'not planned' for the original import.

[suparious]

Re-opening — initial closure was premature. The upstream PR code IS retrievable. Will process properly.

[suparious]

Applied upstream PR#2436.

[AnthonyGiorgio]

Thank you for merging this! I've opened PR #495 with a small update.