Feature/paired item support (#3869)

* Add paired item helper and implement it in some nodes

packages/nodes-base/nodes/GoToWebinar/GoToWebinar.node.ts

@@ -154,7 +154,7 @@ export class GoToWebinar implements INodeType {
 		const operation = this.getNodeParameter('operation', 0) as string;
 
 		let responseData;
-		const returnData: IDataObject[] = [];
+		const returnData: INodeExecutionData[] = [];
 
 		const { oauthTokenData } = (await this.getCredentials('goToWebinarOAuth2Api')) as {
 			oauthTokenData: { account_key: string; organizer_key: string };
@@ -636,18 +636,25 @@ export class GoToWebinar implements INodeType {
 				}
 			} catch (error) {
 				if (this.continueOnFail()) {
-					returnData.push({ error: error.message });
+					const executionErrorData = this.helpers.constructExecutionMetaData(
+						this.helpers.returnJsonArray({ error: error.message }),
+						{ itemData: { item: i } },
+					);
+					returnData.push(...executionErrorData);
 					continue;
 				}
 
 				throw error;
 			}
 
-			Array.isArray(responseData)
-				? returnData.push(...responseData)
-				: returnData.push(responseData);
+			const executionData = this.helpers.constructExecutionMetaData(
+				this.helpers.returnJsonArray(responseData),
+				{ itemData: { item: i } },
+			);
+
+			returnData.push(...executionData);
 		}
 
-		return [this.helpers.returnJsonArray(returnData)];
+		return this.prepareOutputData(returnData);
 	}
 }