Add Webhook response node (#2254)

* ✨ Add Webhook-Response-Node

* ⚡ Replace callback function with promise

* ✨ Add support for Bull and binary-data

* ✨ Add string response option

* ⚡ Remove some comments

* ✨ Make more generically possible & fix issue multi call in
queue mode

* ⚡ Fix startup and eslint issues

* ⚡ Improvements to webhook response node and functionality

* ⚡ Replace data with more generic type

* ⚡ Make statusMessage optional

* ⚡ Change parameter order

* ⚡ Move Response Code underneath options

* ⚡ Hide Response Code on Webhook node if mode responseNode got selected

* ⚡ Minor improvements

* ⚡ Add missing file and fix lint issue

* ⚡ Fix some node linting issues

* ⚡ Apply feedback

* ⚡ Minor improvements

packages/cli/src/Interfaces.ts

@@ -7,19 +7,19 @@ import {
 	ICredentialsEncrypted,
 	ICredentialType,
 	IDataObject,
+	IDeferredPromise,
+	IExecuteResponsePromiseData,
 	IRun,
 	IRunData,
 	IRunExecutionData,
 	ITaskData,
 	ITelemetrySettings,
 	IWorkflowBase as IWorkflowBaseWorkflow,
-	// eslint-disable-next-line @typescript-eslint/no-unused-vars
-	IWorkflowCredentials,
 	Workflow,
 	WorkflowExecuteMode,
 } from 'n8n-workflow';
 
-import { IDeferredPromise, WorkflowExecute } from 'n8n-core';
+import { WorkflowExecute } from 'n8n-core';
 
 // eslint-disable-next-line import/no-extraneous-dependencies
 import * as PCancelable from 'p-cancelable';
@@ -47,6 +47,11 @@ export interface IBullJobResponse {
 	success: boolean;
 }
 
+export interface IBullWebhookResponse {
+	executionId: string;
+	response: IExecuteResponsePromiseData;
+}
+
 export interface ICustomRequest extends Request {
 	parsedUrl: Url | undefined;
 }
@@ -237,6 +242,7 @@ export interface IExecutingWorkflowData {
 	process?: ChildProcess;
 	startedAt: Date;
 	postExecutePromises: Array<IDeferredPromise<IRun | undefined>>;
+	responsePromise?: IDeferredPromise<IExecuteResponsePromiseData>;
 	workflowExecution?: PCancelable<IRun>;
 }
 
@@ -490,6 +496,7 @@ export interface IPushDataConsoleMessage {
 
 export interface IResponseCallbackData {
 	data?: IDataObject | IDataObject[];
+	headers?: object;
 	noWebhookResponse?: boolean;
 	responseCode?: number;
 }