Add types-only AIDL package

android.hardware.wifi.common.

Types from this package will be
used across the Supplicant, Hostapd,
and Wifi Vendor HALs.

Initial type OuiKeyedData can be
used by vendors to pass additional
vendor-specific parameters.

Bug: 296069900
Test: m
Change-Id: Icef0261200358ecb662131bc06930d0d4db60312