chore: convert recipe to v1

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-webservice.

I've started converting the recipe to v1 as instructed in #35.

If I find any needed changes to the recipe, I'll push them to this PR shortly. Thank you for waiting!

Here's a checklist to do before merging.

• Bump the build number if needed

Fixes #35

[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 (recipe/meta.yaml) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe/meta.yaml:

• ℹ️ top-level output overrides versions pinned in the feedstock:
  ['- In section host: python 9999']
  Requirement spec should not list version specifiers to respect conda-forge-pinning. If you need to force another version, please override the pin via conda_build_config.yaml.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/35411199181. 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 (recipe/recipe.yaml) and found it was in an excellent condition.