✨ Add Spontit Node (#1186)

* Added first trial for a spontit integration

* Added spontit packages

* Changed option types from collection to string

* ⚡ Improvements to Spontit Node

Improvements to #1163

Co-authored-by: Tobias Schulz-Hess <tobias.schulz-hess@xing.com>

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

@@ -0,0 +1,49 @@
+import {
+	OptionsWithUri,
+} from 'request';
+
+import {
+	IExecuteFunctions,
+	IHookFunctions,
+	ILoadOptionsFunctions,
+	IWebhookFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject,
+} from 'n8n-workflow';
+
+export async function spontitApiRequest(this: IExecuteFunctions | ILoadOptionsFunctions | IHookFunctions | IWebhookFunctions, method: string, resource: string, body: any = {}, qs: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
+
+	const credentials = this.getCredentials('spontitApi') as IDataObject;
+
+	try {
+		const options: OptionsWithUri = {
+			headers: {
+				'X-Authorization': credentials.apiKey as string,
+				'X-UserId': credentials.username as string,
+			},
+			method,
+			body,
+			qs,
+			uri: `https://api.spontit.com/v3${resource}`,
+			json: true,
+		};
+		if (Object.keys(body).length === 0) {
+			delete options.body;
+		}
+		//@ts-ignore
+		return await this.helpers?.request(options);
+	} catch (error) {
+
+		if (error.response && error.response.body && error.response.body.message) {
+
+			const messages = error.response.body.message;
+			// Try to return the error prettier
+			throw new Error(
+				`Spontit error response [${error.statusCode}]: ${messages}`,
+			);
+		}
+		throw error;
+	}
+}