migrate app settings page to composition API and typescript

src/core/base.ts

@@ -13,4 +13,9 @@ export interface TypeAndDisplayName {
     readonly displayName: string;
 }
 
+export interface LocalizedSwitchOption {
+    readonly value: boolean;
+    readonly displayName: string;
+}
+
 export type BeforeResolveFunction = (callback: () => void) => void;

src/core/timezone.ts

@@ -1,5 +1,18 @@
 import type { TypeAndName } from './base.ts';
 
+export interface TimezoneInfo {
+    readonly displayName: string;
+    readonly timezoneName: string;
+}
+
+export interface LocalizedTimezoneInfo {
+    readonly name: string;
+    readonly utcOffset: string;
+    readonly utcOffsetMinutes: number;
+    readonly displayName: string;
+    readonly displayNameWithUtcOffset: string;
+}
+
 export class TimezoneTypeForStatistics implements TypeAndName {
     public static readonly ApplicationTimezone = new TimezoneTypeForStatistics(0, 'Application Timezone');
     public static readonly TransactionTimezone = new TimezoneTypeForStatistics(1, 'Transaction Timezone');