fix(flake): add missing meta section to flake

[ch4og]

Description of change

This adds meta section which is needed for example to show description of a package

[codecov[bot]]

Codecov Report

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

Project coverage is 3.33%. Comparing base (aba6112) to head (70e747d). Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #74 +/- ## ======================================== - Coverage 3.34% 3.33% -0.01% ======================================== Files 19 19 Lines 2399 2407 +8 ======================================== Hits 80 80 - Misses 2319 2327 +8 ```

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[orhun]

btw, do you know if there are any GitHub actions (or can we hack something together) to test the Nix builds in CI?

[ch4og]

Easiest approach is installing nix package manager onto action

I'll look into it now and will create PR / give you feedback

[orhun]

perfect, thanks!

[ch4og]

I did an action that builds flake https://github.com/orhun/binsider/commit/50f6acd686acdb489f150aa3593b9da0250a74be but I have no idea how to use rust-cache with nix building system.

After an hour of searching a way I found nothing.
Without rust-cache build takes 5+mins. https://github.com/ch4og/binsider/actions/runs/11232508090/job/31224245945

The only way I know to fix this is complex full rewrite of flake, that will build cargo crate. I don't have enough knowlege and desire to do it.

Should I create a PR with this half success?

[orhun]

Ah, for sure, please go ahead and create a draft PR. I can ping some Nix people for further help :)

Thanks for your effort on this! ❤️