Device ID attestation: Add feature flag.

Add a feature flag to find out if Device ID attestation is supported or
not, as it is an optional feature.
Otherwise, the cts tests could not meaningfully say if the device
correctly supports this feature or not.

Bug: 72642093
Bug: 73448533
Test: Modified CTS tests.
Change-Id: Ia6ba47a5262412ab24afa700d1b891be10a21df9