Add support for AIX

[bzEq]

Add support for powerpc64-ibm-aix which is a tier-3 target now.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.89%. Comparing base (d62cd04) to head (545c9ca).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #74 +/- ## ======================================= Coverage 94.89% 94.89% ======================================= Files 4 4 Lines 940 941 +1 ======================================= + Hits 892 893 +1 Misses 48 48 ``` | [Flag](https://app.codecov.io/gh/uutils/platform-info/pull/74/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uutils) | Coverage Δ | | |---|---|---| | [macos_latest](https://app.codecov.io/gh/uutils/platform-info/pull/74/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uutils) | `99.30% <100.00%> (+<0.01%)` | :arrow_up: | | [ubuntu_latest](https://app.codecov.io/gh/uutils/platform-info/pull/74/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uutils) | `99.31% <100.00%> (+<0.01%)` | :arrow_up: | | [windows_latest](https://app.codecov.io/gh/uutils/platform-info/pull/74/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uutils) | `94.40% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uutils#carryforward-flags-in-the-pull-request-comment) to find out more.

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[cakebaker]

Thanks for your PR :)