Wifi: add WAPI constants and fields

This changes adds below WAPI codes:
* WAPI feature, proto, key management, cipher
* WAPI suite field to WifiConfiguration
* New builder method for WAPI network in WifiNetworkSuggestion.

Bug: 139257562
Test: atest FrameworksWifiApiTests
Change-Id: I5d6edec45a535f483be3319183671c90eef8539a