feat: add savings charge form (#726)

Fixes: #250

src/app/savings/common-resolvers/savings-charge-template.resolver.ts

@@ -0,0 +1,30 @@
+/** Angular Imports */
+import { Injectable } from '@angular/core';
+import { Resolve, ActivatedRouteSnapshot } from '@angular/router';
+
+/** rxjs Imports */
+import { Observable } from 'rxjs';
+
+/** Custom Services */
+import { SavingsService } from '../savings.service';
+
+/**
+ * Savings Charge Template data resolver.
+ */
+@Injectable()
+export class SavingsChargeTemplateResolver implements Resolve<Object> {
+
+  /**
+   * @param {SavingsService} SavingsService savings service.
+   */
+  constructor(private savingsService: SavingsService) {}
+
+  /**
+   * Returns the Savings Charge Template.
+   * @returns {Observable<any>}
+   */
+  resolve(route: ActivatedRouteSnapshot): Observable<any> {
+    const savingAccountId = route.paramMap.get('savingAccountId');
+    return this.savingsService.getSavingsChargeTemplateResource(savingAccountId);
+  }
+}