Feature: Refactor attestation package

[SammyOina]

Is your feature request related to a problem? Please describe.

package quoteprovider has redundant functions compared to sev and tdx packages. we need to make the package more aligned and have clear interfaces exposed for verifier and providers

Describe the feature you are requesting, as well as the possible use case(s) for it.

we need a refactor

Indicate the importance of this feature to you.

Must-have

Anything else?

No response