fix: 引入Settings的Module

Settings/aconfig/settings_telephony_flag_declarations.aconfig

@@ -0,0 +1,16 @@
+package: "com.android.settings.flags"
+container: "system"
+
+flag {
+    name: "remove_key_hide_enable_2g"
+    namespace: "cellular_security"
+    description: "Stop honoring CarrierConfigManager.KEY_HIDE_ENABLE_2G. Allow 2G toggle cannot be hidden from users by carriers."
+    bug: "300248708"
+}
+
+flag {
+    name: "is_dual_sim_onboarding_enabled"
+    namespace: "settings_experience"
+    description: "Control the Dual SIM onobarding feature"
+    bug: "298898436"
+}