[FEA] Add support to str.normalize_spaces and str.normalize_characters in dask_cudf

**Is your feature request related to a problem? Please describe.**
`str.normalize_spaces` and `str.normalize_characters` are not supported in dask_cudf . It would be great to expose them via dask_cudf.

**Describe the solution you'd like**
To have those methods available.

**Describe alternatives you've considered**
None

**Additional context**
Using RAPIDS 22.04 in a DGX-1 server