✨ Add Cloud Natural Language node (#1181)

* ✨ Add Cloud Natural Language node

* ⬆️ Set google-fonts-webpack-plugin to latest version

* 🐛 Rename method composite to compose

* ⚡ Improvements to Google Cloud Natural Language Node

Improvements to #1171

Co-authored-by: Tanay Pant <tanaypant@protonmail.com>

packages/nodes-base/nodes/Google/CloudNaturalLanguage/GenericFunctions.ts

@@ -0,0 +1,59 @@
+import {
+	OptionsWithUri,
+} from 'request';
+
+import {
+	IExecuteFunctions,
+	IExecuteSingleFunctions,
+	ILoadOptionsFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject,
+} from 'n8n-workflow';
+
+export async function googleApiRequest(this: IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions, method: string,
+	endpoint: string, body: any = {}, qs: IDataObject = {}, uri?: string, option: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
+	let options: OptionsWithUri = {
+		headers: {
+			'Accept': 'application/json',
+			'Content-Type': 'application/json',
+		},
+		method,
+		body,
+		qs,
+		uri: uri || `https://language.googleapis.com${endpoint}`,
+		json: true,
+	};
+
+	options = Object.assign({}, options, option);
+
+	try {
+		if (Object.keys(body).length === 0) {
+			delete options.body;
+		}
+		//@ts-ignore
+		return await this.helpers.requestOAuth2.call(this, 'googleCloudNaturalLanguageOAuth2Api', options);
+
+	} catch (error) {
+		if (error.response && error.response.body && error.response.body.error) {
+
+			let errorMessages;
+
+			if (error.response.body.error.errors) {
+				// Try to return the error prettier
+				errorMessages = error.response.body.error.errors;
+
+				errorMessages = errorMessages.map((errorItem: IDataObject) => errorItem.message);
+
+				errorMessages = errorMessages.join('|');
+
+			} else if (error.response.body.error.message) {
+				errorMessages = error.response.body.error.message;
+			}
+
+			throw new Error(`Google Cloud Natural Language error response [${error.statusCode}]: ${errorMessages}`);
+		}
+		throw error;
+	}
+}