[Wi-Fi] Add a new proto field for adding new networks panel page.

Add a new metric for proto upload log use.

For R feature: Add a mechanism for apps to add saved networks to the
device, need to define a new metric for this page.

Bug: 144891278
Test: will test in the Settings APP CL
Change-Id: I819ba0b39401576ab04e8f9adb9b7196a61fc6f6

core/proto/android/app/settings_enums.proto

@@ -2472,4 +2472,9 @@ enum PageId {
     // CATEGORY: SETTINGS
     // OS: R
     SETTINGS_BUGREPORT_HANDLER = 1808;
+
+    // Panel for adding Wi-Fi networks
+    // CATEGORY: SETTINGS
+    // OS: R
+    PANEL_ADD_WIFI_NETWORKS = 1809;
 }