Release 0.7.0
- chore: bump version to 0.7.0
- refactor: rename RsaPublicKey as TpmRsaPublicKey
- refactor: rename EccPublicKey as TpmEccPublicKey
- remove: wrapper EccCurve type
- refactor: replace traits with from_{ecc_curve,nid_*{ helpers
- feat: From<Nid> for EccCurve
- refactor: rename PublicKey to TpmPublicKey
- refactor(error): rename Error to TpmCryptoError
- feat(error): Marshal and Unmarshal variants