Add aioresult to Awesome Trio Libraries in the docs

[arthur-tacca]

I think my little aioresult library (github, docs, PyPI) could be useful to some, so this would add it to the list of Awesome Trio Libraries in the Trio docs.

[codecov[bot]]

Codecov Report

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

Comparison is base (70c8b76) 99.44% compared to head (0659e4d) 99.64%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2948 +/- ## ========================================== + Coverage 99.44% 99.64% +0.19% ========================================== Files 117 117 Lines 17564 17564 Branches 3166 3166 ========================================== + Hits 17467 17502 +35 + Misses 79 43 -36 - Partials 18 19 +1 ``` [see 9 files with indirect coverage changes](https://app.codecov.io/gh/python-trio/trio/pull/2948/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=python-trio)

[trio-bot[bot]]

Hey @arthur-tacca, it looks like that was the first time we merged one of your PRs! Thanks so much! :tada: :birthday:

If you want to keep contributing, we'd love to have you. So, I just sent you an invitation to join the python-trio organization on Github! If you accept, then here's what will happen:

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