HCI: Create AddressWithType and its unit tests

* Create hci::AddressWithType that has both hci::Address and
  hci::AddressType in the same copyable, hashable, and comparable
  object for easier management
* Create unit tests for the hash function

Bug: 139135297
Test: bluetooth_test_gd.AddressWithTypeTest
Change-Id: I2c81de7a3bd19656b687ef498f02d6380321f92d