feat: add components for external services (#376)

- Add sms and edit-sms component
- Add notification and edit-notification component
- Add email and edit-email component
- Add amazon-s3 and edit-amazon-s3 component

Fixes: #182 and Fixes: #183

src/app/system/external-services/notification/notification.component.ts

@@ -0,0 +1,51 @@
+/** Angular Imports */
+import { Component, OnInit, ViewChild } from '@angular/core';
+import { ActivatedRoute } from '@angular/router';
+import { MatTableDataSource, MatSort } from '@angular/material';
+
+/**
+ * Notification Configuration Component.
+ */
+@Component({
+  selector: 'mifosx-notification',
+  templateUrl: './notification.component.html',
+  styleUrls: ['./notification.component.scss']
+})
+export class NotificationComponent implements OnInit {
+
+  /** Notification configuration data. */
+  notificationConfigurationData: any;
+  /** Columns to be displayed in Notification configuration table. */
+  displayedColumns: string[] = ['name', 'value'];
+  /** Data source for Notification configuration table. */
+  dataSource: MatTableDataSource<any>;
+
+  /** Sorter for Notification configuration table. */
+  @ViewChild(MatSort) sort: MatSort;
+
+  /**
+   * Retrieves the Notification configuration data from `resolve`.
+   * @param {ActivatedRoute} route Activated Route.
+   */
+  constructor(private route: ActivatedRoute) {
+    this.route.data.subscribe((data: { notificationConfiguration: any }) => {
+      this.notificationConfigurationData = data.notificationConfiguration;
+    });
+  }
+
+  /**
+   * Sets the Notification Configuration table.
+   */
+  ngOnInit() {
+    this.setNotificationConfiguration();
+  }
+
+  /**
+   * Initializes the data source and sorter for Notification configuration table.
+   */
+  setNotificationConfiguration() {
+    this.dataSource = new MatTableDataSource(this.notificationConfigurationData);
+    this.dataSource.sort = this.sort;
+  }
+
+}