[dice] Add BccHandoverParse wrapper to diced_open_dice

As a step of merging the existing diced_open_dice_cbor library
and libdice_nostd into one open-dice wrapper diced_open_dice.

This API can be used in pvmfw and microdroid later.

Bug: 267575445
Test: atest diced_utils_test diced_sample_inputs_test \
diced_vendor_test diced_open_dice_cbor_test \
libdiced_open_dice_nostd.integration_test \
libdiced_open_dice.integration_test diced_open_dice_cbor_test

Change-Id: I6d0e5a05452749d0554b96783e11626deb00c53c
2 files changed