wifi: Add access network type support

The access network type can be used to indicate network metered state.
Add access network type support when create access point.

Test: Manual Test, check client scan IE to show correct interworking
value. see: b/137879206#comment14
Test: atest VtsHalWifiHostapdV1_0TargetTest
Test: atest VtsHalWifiHostapdV1_1TargetTest
Test: atest VtsHalWifiHostapdV1_2TargetTest
Bug: 137879206

Change-Id: I74213bd763f865f26781313b00e1b1cfeee93086