message: fix(nextjs): Export `SentryWebpackPluginOptions` type
  This will allow people who want typing in their `next.config.js` file to have it without digging into `dist`.
  See
diff: @@ -127,6 +127,7 @@ function filterTransactions(event: Event): Event | null {
  }
  export { withSentryConfig } from './config';
  +export { SentryWebpackPluginOptions } from './config/types';
  export { withSentry } from './utils/withSentry';
  // Wrap various server methods to enable error monitoring and tracing. (Note: This only happens for non-Vercel
  