Support new TPMDirect API

Are there any plans to refactor go-tpm-tools to use the new TPMDirect API in go-tpm/tpm2?

Anyone using the new TPMDirect API and wants to use go-tpm-tools ends up with a bloated binary that includes the old and new APIs.

I think using the old API here also makes trying to navigate the docs for go-tpm and figuring out how to stitch the libraries together to create a new, future-proofed project more difficult and misleading with all the references to the old lib.

Start by comparing go-tpm-tools' current use of the old go-tpm API with the TPMDirect API in go-tpm/tpm2, including the dependency and documentation concerns described in the issue. Done means go-tpm-tools uses the new API without pulling in both APIs and no longer guides users toward the old API.

Written by the indexing model from the issue text.