Add Advanced privacy settings page and initial view model

lib/view_model/privacy_settings_view_model.dart

@@ -0,0 +1,54 @@
+import 'package:cake_wallet/view_model/settings/switcher_list_item.dart';
+import 'package:cw_core/wallet_type.dart';
+import 'package:mobx/mobx.dart';
+import 'package:cake_wallet/generated/i18n.dart';
+
+part 'privacy_settings_view_model.g.dart';
+
+class PrivacySettingsViewModel = PrivacySettingsViewModelBase
+    with _$PrivacySettingsViewModel;
+
+abstract class PrivacySettingsViewModelBase with Store {
+  PrivacySettingsViewModelBase(this.type) {
+    _disableFiat = false;
+    _disableExchange = false;
+    _addCustomNode = false;
+
+    settings = [
+      SwitcherListItem(
+        title: "Disable Fiat API",
+        // title: S.current.disable_fiat,
+        value: () => _disableFiat,
+        onValueChange: (_, bool value) => _disableFiat = value,
+      ),
+      SwitcherListItem(
+        title: "Disable Exchange",
+        // title: S.current.disable_exchange,
+        value: () => _disableExchange,
+        onValueChange: (_, bool value) => _disableExchange = value,
+      ),
+      SwitcherListItem(
+        title: "Add New Custom Node",
+        // title: S.current.add_custom_node,
+        value: () => _addCustomNode,
+        onValueChange: (_, bool value) => _addCustomNode = value,
+      ),
+    ];
+  }
+
+  List<SwitcherListItem> settings;
+
+  @observable
+  bool _disableFiat;
+
+  @observable
+  bool _disableExchange;
+
+  @observable
+  bool _addCustomNode;
+
+  final WalletType type;
+
+  @computed
+  bool get addCustomNode => _addCustomNode;
+}