The enhanced version of this library includes manual edits to the src/index.ts file that may be overwritten during generation. Right now, the synth.py file excludes this file from generation, which means that the index file might miss updates to the service.

We need to develop a way to:

1. Generate a fresh version of the client library with updates to the service
2. Update the index.ts file as part of library generation
3. Preserve any manual edits to index.ts
4. Do all of the above without adding post-processing steps to synth.py

One suggestion is that we generate the library into a separate folder.