ISupplicant service & iface initialization

Created new class WifiSupplicantHal for calling the new HIDL supplicant
hal from wifi framework.
Is initialized from WifiStateMachine after supplicant is enabled by
wificond, preparing ISupplicantStaIface & ISupplicantP2pIface.
Have disabled the initialization for now, code is inert.

Test: unit tests pass
Bug: 33383725
Change-Id: Iec5bb856c554b68c8f54a5a1224ca2fe7b548618
5 files changed
tree: 7b66dd6620976048e74776bf73b45b0f74efd554
  1. libwifi_hal/
  2. libwifi_system/
  3. service/
  4. tests/
  5. PREUPLOAD.cfg