Ex 1-3) list all datasets in the catalog

```
Traceback (most recent call last):
  File "c:\Temp\t.py", line 8, in <module>
    nada.list_all_datasets()
    ^^^^^^^^^^^^^^^^^^^^^^
AttributeError: module 'pynada' has no attribute 'list_all_datasets'. Did you mean: 'list_datasets'?
```

https://github.com/klee016/PyNADA/blob/main/examples/Search%20%26%20Browse%20examples.ipynb