feat: create, view, edit, delete for hooks (#403)

- Add create-hook
- Add view-hook
- Add edit-hook

#180

src/app/system/system.service.ts

@@ -32,6 +32,46 @@ export class SystemService {
     return this.http.get('/hooks');
   }
 
+  /**
+   * @param {string} hookId Hook ID of Hook.
+   * @returns {Observable<any>}
+   */
+  getHook(hookId: string): Observable<any> {
+    return this.http.get(`/hooks/${hookId}`);
+  }
+
+  /**
+   * @returns {Observable<any>} Hooks Template.
+   */
+  getHooksTemplate(): Observable<any> {
+    return this.http.get('/hooks/template');
+  }
+
+  /**
+   * @param {any} hook Hook to be created.
+   * @returns {Observable<any>}
+   */
+  createHook(hook: any): Observable<any> {
+    return this.http.post('/hooks', hook);
+  }
+
+  /**
+   * @param {string} hookId Hook ID of Hook to be updated.
+   * @param {any} hook Hook to be updated.
+   * @returns {Observable<any>}
+   */
+  updateHook(hookId: string, hook: any): Observable<any> {
+    return this.http.put(`/hooks/${hookId}`, hook);
+  }
+
+  /**
+   * @param {string} hookId Hook ID of Hook to be deleted.
+   * @returns {Observable<any>}
+   */
+  deleteHook(hookId: string): Observable<any> {
+    return this.http.delete(`/hooks/${hookId}`);
+  }
+
   /**
    * @returns {Observable<any>} Fetches Roles and Permissions
    */