Connected MAC Randomization Metrics Proto

1) Add "is_mac_randomization_on" that indicates if Connected MAC
Randomization is turned on/off when the proto is created.

2) Add "TYPE_MAC_CHANGE" as a new trigger event for StaEvent. This will
occur whenever we are dynamically changing the MAC address for Connected
MAC Randomization.

Bug: 73666905
Test: Unittest.
Change-Id: Ifef0908f668e39531ebe5a38588f8e3713c047a9

proto/src/wifi.proto

@@ -435,6 +435,9 @@ message WifiLog {
 
   // Wi-Fi RTT metrics
   optional WifiRttLog wifi_rtt_log = 110;
+
+  // Flag which indicates if Connected MAC Randomization is enabled
+  optional bool is_mac_randomization_on = 111 [default = false];
 }
 
 // Information that gets logged for every WiFi connection.
@@ -748,6 +751,9 @@ message StaEvent {
     // The NetworkAgent score for wifi has changed in a way that may impact
     // connectivity
     TYPE_SCORE_BREACH = 16;
+
+    // Framework changed Sta interface MAC address
+    TYPE_MAC_CHANGE = 17;
   }
 
   enum FrameworkDisconnectReason {