feat: add loan charge to existing loan accounts (#370)

- Add Loans Module.
- Add add-loan-charge component.
- Add loans-routing.module.ts
- Add loan-charge-template.resolver.ts

Fixes: #247

src/app/loans/loans.module.spec.ts

@@ -0,0 +1,13 @@
+import { LoansModule } from './loans.module';
+
+describe('LoansModule', () => {
+  let loansModule: LoansModule;
+
+  beforeEach(() => {
+    loansModule = new LoansModule();
+  });
+
+  it('should create an instance', () => {
+    expect(loansModule).toBeTruthy();
+  });
+});