Add `hal_v2` and `hal_v3` features to the kmr_wire and kmr_hal crates,
and gate inclusion of new enum variants and new trait entrypoints on
these features.

Add variant Soong targets for libkmr_wire and libkmr_hal that only
enable some of these features (and turn them both on for the default
targets).

This necessitated a bit of a re-factoring of the code that emits the
CDDL for the KeyParam type.

Regenerate CDDL along the way, including a previous change.

Add a message that the HAL sends to the TA at start of day to indicate
what version of the HAL to support. (However, cope with an error
response to allow the HAL service to be upgraded before the TA is.)

Make the version used in attestations into a parameter, fed by the value
sent by the HAL.

So for a vendor to use the Rust reference implementation in (say) v1
mode, they should just need to link the HAL service against
libkmr_hal_v1 and libkmr_wire_hal_v1.

Bug: 303836048
Test: build new variants
Test: VtsAidlKeyMintTargetTest
Test: build CF using _hal_v[12] targets, run VTS
Change-Id: Ia0bc48b36516af8720e1a907b977d7354c862a06