Add tinymist

[freundTech]

Checklist

• [x] Title of this PR is meaningful: e.g. "Adding my_nifty_package", not "updated meta.yaml".
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[conda-forge-webservices[bot]]

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/tinymist) and found it was in an excellent condition.

[freundTech]

@conda-forge/help-rust, ready for review!