Feature flag for Ethernet Settings

Flag: com.android.settings.connectivity.ethernet_settings

Adding an aconfig flag for Ethernet Settings CUJs as defined in
go/al-ethernet-prd

Bug: b/384375770
Change-Id: I028e4ac1038416b720fa8872301f50c65f1d4a5f

aconfig/Android.bp

@@ -79,3 +79,15 @@ java_aconfig_library {
     name: "keyboard_flags_lib",
     aconfig_declarations: "keyboard_flags",
 }
+
+aconfig_declarations {
+    name: "settings_connectivity_flags",
+    package: "com.android.settings.connectivity",
+    container: "system",
+    srcs: ["connectivity/*.aconfig"],
+}
+
+java_aconfig_library {
+    name: "settings_connectivity_flags_lib",
+    aconfig_declarations: "settings_connectivity_flags",
+}

aconfig/connectivity/settings_ethernet_declarations.aconfig

@@ -0,0 +1,9 @@
+package: "com.android.settings.connectivity"
+container: "system"
+
+flag {
+  name: "ethernet_settings"
+  namespace: "connectivity"
+  description: "Flag for Ethernet settings"
+  bug: "372928532"
+}