feat: initialize language and date-format settings (#1214)

See: #1213

src/app/settings/settings.service.ts

@@ -0,0 +1,44 @@
+/** Angular Imports */
+import { Injectable } from '@angular/core';
+
+/**
+ * Settings Service
+ */
+@Injectable({
+  providedIn: 'root'
+})
+export class SettingsService {
+
+  constructor() { }
+
+  /**
+   * Sets date format setting throughout the app.
+   * @param {string} dateFormat Date Format
+   */
+  setDateFormat(dateFormat: string) {
+    localStorage.setItem('mifosXDateFormat', JSON.stringify(dateFormat));
+  }
+
+  /**
+   * Sets language setting throughout the app.
+   * @param {any} language Language.
+   */
+  setLanguage(language: { name: string, code: string }) {
+    localStorage.setItem('mifosXLanguage', JSON.stringify(language));
+  }
+
+  /**
+   * Returns date format setting.
+   */
+  get dateFormat() {
+    return JSON.parse(localStorage.getItem('mifosXDateFormat'));
+  }
+
+  /**
+   * Returns language setting
+   */
+  get language() {
+    return JSON.parse(localStorage.getItem('mifosXLanguage'));
+  }
+
+}