feat(accounting-rules): view rule component

Add view rule component.

src/app/accounting/accounting-rules/view-rule/view-rule.resolver.ts

@@ -0,0 +1,19 @@
+import { Injectable } from '@angular/core';
+import { Resolve, ActivatedRouteSnapshot } from '@angular/router';
+
+import { Observable } from 'rxjs';
+
+import { AccountingService } from '../../accounting.service';
+
+@Injectable()
+export class ViewAccountingRuleResolver implements Resolve<Object> {
+
+  constructor(private accountingService: AccountingService) {}
+
+  resolve(route: ActivatedRouteSnapshot): Observable<any> {
+    const id = route.paramMap.get('id');
+
+    return this.accountingService.getAccountingRule(id);
+  }
+
+}