Merge changes I39f94b70,If90284e1,Ib31d7dd0,I95f3bd4f,I9d5f2067, ... into main

* changes:
  Retrieve CoD from storage when a new LE device record is created
  Cache CoD during LE pairing
  Expose a BTM interface to get cached class of device
  Expose a btif storage function to read class of device
  Read appearance of new LE devices on connection
  Add GAP interface to read class of device for LE devices