feat: add has-permission structural directive (#722)

Fixes: #721

src/app/directives/directives.module.ts

@@ -0,0 +1,20 @@
+/** Angular Imports */
+import { NgModule } from '@angular/core';
+import { CommonModule } from '@angular/common';
+
+/** Custom Directives */
+import { HasPermissionDirective } from './has-permission/has-permission.directive';
+
+/**
+ *  Directives Module
+ *
+ *  All custom directives should be declared and exported here.
+ */
+@NgModule({
+  imports: [
+    CommonModule
+  ],
+  declarations: [HasPermissionDirective],
+  exports: [HasPermissionDirective]
+})
+export class DirectivesModule { }