✨ Add Wufoo-Trigger node (#597)

* Generic functions, credentials, interface, logo, triggernode

* TSLint tabs rule, request error handling, webhook done

On hold until Wufoo responds with sandbox account

* Removed test logging, fixed various errors, cleaned up

* Sorted imports, adjusted data display,  removed anys, tslint import sort rule

* RAAAAAW data

* ⚡ Fix logo and improve formatting

* ⚡ Improvements

* ⚡ Minor improvements to WuFoo-Trigger

Co-authored-by: Rupenieks <ru@myos,co>
Co-authored-by: ricardo <ricardoespinoza105@gmail.com>
Co-authored-by: Jan Oberhauser <jan.oberhauser@gmail.com>

packages/nodes-base/nodes/Wufoo/GenericFunctions.ts

@@ -0,0 +1,45 @@
+import {
+	OptionsWithUri,
+} from 'request';
+
+import {
+	IExecuteFunctions,
+	IExecuteSingleFunctions,
+	IHookFunctions,
+	ILoadOptionsFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject,
+} from 'n8n-workflow';
+
+export async function wufooApiRequest(this: IHookFunctions | IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions, method: string, resource: string, body: any = {}, qs: IDataObject = {}, uri?: string, option: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
+	const credentials = this.getCredentials('wufooApi');
+	if (credentials === undefined) {
+		throw new Error('No credentials got returned!');
+	}
+
+	let options: OptionsWithUri = {
+		auth: {
+			username: credentials!.apiKey as string,
+			password: '',
+		},
+		method,
+		form: body,
+		body,
+		qs,
+		uri: `https://${credentials!.subdomain}.wufoo.com/api/v3/${resource}`,
+		json: true
+	};
+
+	options = Object.assign({}, options, option);
+	if (Object.keys(options.body).length === 0 || method === 'PUT') {
+		delete options.body;
+	}
+
+	try {
+		return await this.helpers.request!(options);
+	} catch (error) {
+		throw new Error(error.message);
+	}
+}