add TODO re: auto file in npm rollup config

Author: lobsterkatie

packages/serverless/rollup.npm.config.js

@@ -2,6 +2,9 @@ import { makeBaseNPMConfig, makeNPMConfigVariants } from '../../rollup/index.js'
 
 export default makeNPMConfigVariants(
   makeBaseNPMConfig({
+    // TODO: `awslambda-auto.ts` is a file which the lambda layer uses to automatically init the SDK. Does it need to be
+    // in the npm package? Is it possible that some people are using it themselves in the same way the layer uses it (in
+    // which case removing it would be a breaking change)? Should it stay here or not?
     entrypoints: ['src/index.ts', 'src/awslambda-auto.ts'],
     // packages with bundles have a different build directory structure
     hasBundles: true,