feat: Add Ask assistant behind feature flag (#9995)

Co-authored-by: Ricardo Espinoza <ricardo@n8n.io>
Co-authored-by: Milorad Filipovic <milorad@n8n.io>

packages/editor-ui/src/api/assistant.ts

@@ -0,0 +1,25 @@
+import type { IRestApiContext } from '@/Interface';
+import type { ChatRequest, ReplaceCodeRequest } from '@/types/assistant.types';
+import { makeRestApiRequest, streamRequest } from '@/utils/apiUtils';
+
+export function chatWithAssistant(
+	ctx: IRestApiContext,
+	payload: ChatRequest.RequestPayload,
+	onMessageUpdated: (data: ChatRequest.ResponsePayload) => void,
+	onDone: () => void,
+	onError: (e: Error) => void,
+): void {
+	void streamRequest(ctx, '/ai-assistant/chat', payload, onMessageUpdated, onDone, onError);
+}
+
+export async function replaceCode(
+	context: IRestApiContext,
+	data: ReplaceCodeRequest.RequestPayload,
+): Promise<ReplaceCodeRequest.ResponsePayload> {
+	return await makeRestApiRequest<ReplaceCodeRequest.ResponsePayload>(
+		context,
+		'POST',
+		'/ai-assistant/chat/apply-suggestion',
+		data,
+	);
+}