[Upstream PR] MiNT (Atari) port

[victorbash400]

Imported from upstream pull request fastfetch-cli#2334: fastfetch-cli#2334

Original author: @mmuman
Original state: OPEN
Original labels: none
Original assignees: none

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Summary

This adds support for the Atari MiNT OS (not the GNU/Linux distro).

Changes

• a lot of detection modules,
• some code required to build on the OS which does not support all the fancy new POSIX things.

Screenshots

Checklist

• I have tested my changes locally.