feat: add view, edit roles and permission component (#632)

- Add view roles and permission
- Edit roles and permission
- Edit role description

Fixes: #176

src/app/system/roles-and-permissions/view-role/view-role.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 { SystemService } from '../../system.service';
+
+/**
+ * Roles and Permission data resolver.
+ */
+@Injectable()
+export class ViewRoleResolver implements Resolve<Object> {
+
+    /**
+     * @param {SystemService} systemService System service.
+     */
+    constructor(private systemService: SystemService) { }
+
+    /**
+     * Returns the roles and permissions data.
+     * @returns {Observable<any>}
+     */
+    resolve(route: ActivatedRouteSnapshot): Observable<any> {
+        const id = route.paramMap.get('id');
+        return this.systemService.getRole(id);
+    }
+
+}