refactor(frontend): 🚧 Migrate Dashboard to Nuxt

Add API and Functinality for Admin Dashboard. Stills needs to clean-up. See // TODO's

frontend/api/class-interfaces/backups.ts

@@ -0,0 +1,69 @@
+import { BaseAPI } from "./_base";
+
+export interface BackupOptions {
+  recipes?: boolean;
+  settings?: boolean;
+  pages?: boolean;
+  themes?: boolean;
+  groups?: boolean;
+  users?: boolean;
+  notifications?: boolean;
+}
+
+export interface ImportBackup extends BackupOptions {
+  name: string;
+}
+
+export interface BackupJob {
+  tag?: string;
+  options: BackupOptions;
+  templates?: string[];
+}
+
+export interface BackupFile {
+  name: string;
+  date: string;
+}
+
+export interface AllBackups {
+  imports: BackupFile[];
+  templates: string[];
+}
+
+const prefix = "/api";
+
+const routes = {
+  backupsAvailable: `${prefix}/backups/available`,
+  backupsExportDatabase: `${prefix}/backups/export/database`,
+  backupsUpload: `${prefix}/backups/upload`,
+
+  backupsFileNameDownload: (fileName: string) => `${prefix}/backups/${fileName}/download`,
+  backupsFileNameImport: (fileName: string) => `${prefix}/backups/${fileName}/import`,
+  backupsFileNameDelete: (fileName: string) => `${prefix}/backups/${fileName}/delete`,
+};
+
+export class BackupAPI extends BaseAPI {
+  /** Returns a list of avaiable .zip files for import into Mealie.
+   */
+  async getAll() {
+    return await this.requests.get<AllBackups>(routes.backupsAvailable);
+  }
+
+  /** Generates a backup of the recipe database in json format.
+   */
+  async createOne(payload: BackupJob) {
+    return await this.requests.post(routes.backupsExportDatabase, payload);
+  }
+
+  /** Import a database backup file generated from Mealie.
+   */
+  async restoreDatabase(fileName: string, payload: BackupOptions) {
+    return await this.requests.post(routes.backupsFileNameImport(fileName), payload);
+  }
+
+  /** Removes a database backup from the file system
+   */
+  async deleteOne(fileName: string) {
+    return await this.requests.delete(routes.backupsFileNameDelete(fileName));
+  }
+}