migrate services.js to ts

src/models/data_management.ts

@@ -0,0 +1,13 @@
+export interface ClearDataRequest {
+    readonly password: string;
+}
+
+export interface DataStatisticsResponse {
+    readonly totalAccountCount: number;
+    readonly totalTransactionCategoryCount: number;
+    readonly totalTransactionTagCount: number;
+    readonly totalTransactionCount: number;
+    readonly totalTransactionPictureCount: number;
+    readonly totalTransactionTemplateCount: number;
+    readonly totalScheduledTransactionCount: number;
+}