message: feat: implement the method for GET /app/form/layout.json
diff: @@ -50,4 +50,13 @@ export class AppClient {
  const path = "/k/v1/preview/app/form/fields.json";
  return this.client.delete(path, params);
  }
  +
  + public async getFormLayout(params: {
  + app: AppID;
  + preview?: boolean;
  + }): Promise<{ layout: object[]; revision: string }> {
  + const { preview, ...rest } = params;
  + const path = `/k/v1${preview ? "/preview" : ""}/app/form/layout.json`;
  + return this.client.get(path, { ...rest });
  + }
  }
  