wpa_supplicant(hidl): Add sta_network id_str & ft key mgmt

Implementation of sta_network id_str setter/getter and adding FT
(80211r) key mgmt flags.

Bug: 34284015
Bug: 32571829
Test: Compiles
Change-Id: I43505a7c695f9f201a4a747fa2997038626b9e7e
3 files changed