Add WIFI_ENABLED and WIFI_DISABLED to StaEvent

Log whenever wifi is turned on/off in StaEvent metrics.

Bug: 112193991
Test: frameworks/opt/net/wifi/tests/wifitests/runtests.sh
Test: Turn wifi on/off from settings
Test: adb shell dumpsys wifi | grep -A10 StaEventList
Change-Id: Icf32d4a622f4447e8461560b7cfa4818dcfb1efa
diff --git a/proto/src/wifi.proto b/proto/src/wifi.proto
index f7fcf5c..45d8a55 100644
--- a/proto/src/wifi.proto
+++ b/proto/src/wifi.proto
@@ -811,6 +811,12 @@
 
     // Framework changed Sta interface MAC address
     TYPE_MAC_CHANGE = 17;
+
+    // Wifi is turned on
+    TYPE_WIFI_ENABLED = 18;
+
+    // Wifi is turned off
+    TYPE_WIFI_DISABLED = 19;
   }
 
   enum FrameworkDisconnectReason {