Add sshs package

[denkiwakame]

Checklist

• Title of this PR is meaningful: e.g. "Adding my_nifty_package", not "updated meta.yaml".
• License file is packaged (see here for an example).
• Source is from official source.
• Package does not vendor other packages. (If a package uses the source of another package, they should be separate packages or the licenses of all packages need to be packaged).
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• Build number is 0.
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[github-actions]

Hi! This is the staged-recipes linter and your PR looks excellent! 🚀

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I wanted to let you know that I linted all conda-recipes in your PR (recipes/sshs/recipe.yaml) and found some lint.

Here's what I've got...

For recipes/sshs/recipe.yaml:

• ❌ The recipe could do with some maintainers listed in the extra/recipe-maintainers section.
• ❌ The recipe must have a build/number section.
• ❌ This recipe is using a compiler, which now requires adding a build dependence on ${{ stdlib("c") }} as well. Note that this rule applies to each output of the recipe using a compiler.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/19842582446. Examine the logs at this URL for more detail.}

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipes/sshs/recipe.yaml) and found it was in an excellent condition.

[denkiwakame]

@conda-forge/help-rust all checks passed, ready for review. thanks!