feat(Cloudflare Node): add Cloudflare node (#4271)

* ✨ Cloudflare node

* ⚡ Add paired items

* Added codex file for Cloudflare

* ⚡ Improvements

Co-authored-by: Jonathan Bennetts <jonathan.bennetts@gmail.com>

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

@@ -0,0 +1,65 @@
+import {
+	OptionsWithUri,
+} from 'request';
+
+import {
+	IExecuteFunctions,
+	IExecuteSingleFunctions,
+	ILoadOptionsFunctions,
+	IPollFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject, NodeApiError,
+} from 'n8n-workflow';
+
+export async function cloudflareApiRequest(this: IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions | IPollFunctions, method: string, resource: string, body: any = {}, qs: IDataObject = {}, uri?: string, headers: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
+
+	const options: OptionsWithUri = {
+		method,
+		body,
+		qs,
+		uri: `https://api.cloudflare.com/client/v4${resource}`,
+		json: true,
+	};
+
+	try {
+		if (Object.keys(headers).length !== 0) {
+			options.headers = Object.assign({}, options.headers, headers);
+		}
+		if (Object.keys(body).length === 0) {
+			delete options.body;
+		}
+		return await this.helpers.requestWithAuthentication.call(this, 'cloudflareApi', options);
+	} catch (error) {
+		throw new NodeApiError(this.getNode(), error);
+	}
+}
+
+export async function cloudflareApiRequestAllItems(
+	this: IExecuteFunctions | ILoadOptionsFunctions,
+	propertyName: string,
+	method: string,
+	endpoint: string,
+	body: IDataObject = {},
+	query: IDataObject = {},
+	// tslint:disable-next-line:no-any
+): Promise<any> {
+	const returnData: IDataObject[] = [];
+
+	let responseData;
+	query.page = 1;
+
+	do {
+		responseData = await cloudflareApiRequest.call(
+			this,
+			method,
+			endpoint,
+			body,
+			query,
+		);
+		query.page++;
+		returnData.push.apply(returnData, responseData[propertyName]);
+	} while (responseData.result_info.total_pages !== responseData.result_info.page);
+	return returnData;
+}