Import sigstore-rust into pulumi

[Hayden-IO]

Description

https://github.com/sigstore/sigstore-rust has been donated to the org. Maintainers will be @wolfv, @woodruffw, and @jku. @cpanato, would you be able to help with the import?

Creating the new team in #702

[cpanato]

will do, just recovering from a surgery, will be back next week