feat: add saving-deposit and withdrawal page (#389)

- Add Savings Module.
- Add saving-account-actions component.
- Add savings-account-transactions component.
- Add savings-routing.module.ts
- Add savings-transaction-template.resolver.ts

Fixes: #249

src/app/savings/savings.service.spec.ts

@@ -0,0 +1,12 @@
+import { TestBed } from '@angular/core/testing';
+
+import { SavingsService } from './savings.service';
+
+describe('SavingsService', () => {
+  beforeEach(() => TestBed.configureTestingModule({}));
+
+  it('should be created', () => {
+    const service: SavingsService = TestBed.get(SavingsService);
+    expect(service).toBeTruthy();
+  });
+});