added gdsfactory recipe

[joamatab]

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
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[conda-forge-linter]

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

[joamatab]

Hi!

There are a few dependencies not available
conda.exceptions.ResolvePackageNotFound:

• phidl - klayout - picwriter - rectpack - pyqtree

how can I install them with pip?

[curtisma]

Hi!

There are a few dependencies not available conda.exceptions.ResolvePackageNotFound:

• phidl - klayout - picwriter - rectpack - pyqtree

how can I install them with pip?

We're working on adding klayout in #20396