wifi(interface): Add status for every method

Add a status parameter for every HIDL interface object method which can
possibly become invalid. This should help inform the caller that the
object being used is stale/invalid now.

While there,
Rename |CommandFailureReson| to |FailureReasonCode|.

NOTE: |FailureReason| will continue to indicate any errors during the
processing of the command via the corresponding |onFailure| callback.

Bug: 32056230
Test: Compiles
Change-Id: I2ec5af3075221e483579410f344bcedd6bf17a93