feat(core): Add "Sent by n8n" attribution (#7183)

Github issue / Community forum post (link here to close automatically):

---------

Co-authored-by: Giulio Andreini <g.andreini@gmail.com>

packages/nodes-base/nodes/Microsoft/Teams/GenericFunctions.ts

@@ -89,3 +89,27 @@ export async function microsoftApiRequestAllItemsSkip(
 
 	return returnData;
 }
+
+export function prepareMessage(
+	this: IExecuteFunctions | ILoadOptionsFunctions,
+	message: string,
+	messageType: string,
+	includeLinkToWorkflow: boolean,
+	instanceId?: string,
+) {
+	if (includeLinkToWorkflow) {
+		const { id } = this.getWorkflow();
+		const link = `${this.getInstanceBaseUrl()}workflow/${id}?utm_source=n8n-internal&utm_medium=powered_by&utm_campaign=${encodeURIComponent(
+			'n8n-nodes-base.microsoftTeams',
+		)}${instanceId ? '_' + instanceId : ''}`;
+		messageType = 'html';
+		message = `${message}<br><br><em> Powered by <a href="${link}">this n8n workflow</a> </em>`;
+	}
+
+	return {
+		body: {
+			contentType: messageType,
+			content: message,
+		},
+	};
+}