Add HAL changes for BLIND_SPOT_WARNING_STATE

This property supports error states in addition to its own state.
This is why the comments mention two @data_enums for this property.
This works because states are integer values so as long as all states
have distinct integer values, this functions correctly.

Bug: 264946039
Test: atest VtsHalAutomotiveVehicle_TargetTest
Test: atest CtsCarTestCases:CarPropertyManagerTest
Test: atest CtsCarTestCases:VehiclePropertyIdsTest
Test: atest CtsCarTestCases:BlindSpotWarningStateTest
Test: atest AndroidCarApiTest:BlindSpotWarningStateTest
Change-Id: Idc64af44ecdf33ee5c89d3bf7d303498d80a0d14
diff --git a/automotive/vehicle/vts/src/VtsHalAutomotiveVehicle_TargetTest.cpp b/automotive/vehicle/vts/src/VtsHalAutomotiveVehicle_TargetTest.cpp
index 28b4dcf..6b0fb1b 100644
--- a/automotive/vehicle/vts/src/VtsHalAutomotiveVehicle_TargetTest.cpp
+++ b/automotive/vehicle/vts/src/VtsHalAutomotiveVehicle_TargetTest.cpp
@@ -708,6 +708,12 @@
                    VehicleArea::GLOBAL, VehiclePropertyType::BOOLEAN);
 }
 
+TEST_P(VtsHalAutomotiveVehicleTargetTest, verifyBlindSpotWarningStateConfig) {
+    verifyProperty(VehicleProperty::BLIND_SPOT_WARNING_STATE, VehiclePropertyAccess::READ,
+                   VehiclePropertyChangeMode::ON_CHANGE, VehiclePropertyGroup::SYSTEM,
+                   VehicleArea::MIRROR, VehiclePropertyType::INT32);
+}
+
 TEST_P(VtsHalAutomotiveVehicleTargetTest, verifyLaneDepartureWarningEnabledConfig) {
     verifyProperty(VehicleProperty::LANE_DEPARTURE_WARNING_ENABLED,
                    VehiclePropertyAccess::READ_WRITE, VehiclePropertyChangeMode::ON_CHANGE,