Add "rustls" features for the crates #3827
Description
Feature Summary
Don't require openssl (native-tls) and allow using rustls instead.
Feature Description
OpenSSL crates family always causes problems on every platform. Especially so in big projects. cargo hakari, when unifying the dependencies, only has openssl for the azure-core and azure-identity for me, what completely breaks the builds for me and makes me go through a painful process of dealing with openssl again, here and there, here and there. Using rustls would completely remove such issues for good.
Use Case
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Alternatives
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Additional Context
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