User Data Export and import (#699)

Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/frontend/pulls/699
Co-authored-by: konrad <k@knt.li>
Co-committed-by: konrad <k@knt.li>

src/services/dataExport.js

@@ -0,0 +1,13 @@
+import AbstractService from './abstractService'
+import {downloadBlob} from '../helpers/downloadBlob'
+
+export default class DataExportService extends AbstractService {
+	request(password) {
+		return this.post('/user/export/request', {password: password})
+	}
+	
+	download(password) {
+		return this.getBlobUrl('/user/export/download', 'POST', {password})
+			.then(url => downloadBlob(url, 'vikunja-export.zip'))
+	}
+}