OnResourceReady callback

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Is your feature request related to a problem? Please describe the problem.

I would like to connect to a resource from within the resource OnResourceReady callback; the resource connection string is available, however the resource client/client options or credentials are not available within the event.Services and credentials are missing from the connection string.

How would I be able to connect to the resource created and indicated as ready from with in the OnResourceReady callback

### Describe the solution you'd like

A developer should be able to connect to the resource from the OnResourceReady callback

### Additional context

_No response_