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/common-resolvers/loan-charge-template.resolver.ts

@@ -0,0 +1,31 @@
+/** Angular Imports */
+import { Injectable } from '@angular/core';
+import { Resolve, ActivatedRouteSnapshot  } from '@angular/router';
+
+/** rxjs Imports */
+import { Observable } from 'rxjs';
+
+/** Custom Services */
+import { LoansService } from '../loans.service';
+
+/**
+ * Loan Charge Template data resolver.
+ */
+@Injectable()
+export class LoanChargeTemplateResolver implements Resolve<Object> {
+
+  /**
+   * @param {LoansService} LoansService loans service.
+   */
+  constructor(private loansService: LoansService) {}
+
+  /**
+   * Returns the Loan Charge Template.
+   * @returns {Observable<any>}
+   */
+  resolve(route: ActivatedRouteSnapshot): Observable<any> {
+    const loanId = route.paramMap.get('loanId');
+    return this.loansService.getLoanChargeTemplateResource(loanId);
+  }
+
+}