Add Fast Pair decoder

Test: to reduce the refactor scope did not add test will add in the
follow up.
Bug: 202335820

Change-Id: I2925d4bce9abd3d554a894be331796af4ae857e9
7 files changed
tree: 311be5869901fda53ed3d5d5bbacaafdcec83f18
  1. nearby/