Replacing manual CBOR with serde-cbor

This change strips out all of the manually written CBOR parsing and
serialization code in favor of using the serde-cbor library in order to
make the code more robust and the error messages more actionable.

Fixes: 180392379
Test: atest RemoteProvisionerUnitTests
Change-Id: I1b08b26b6192763e393b061cd9b919cfd71c13c9
2 files changed