[FEA] Basic Iceberg scan support in cudf-polars

**Is your feature request related to a problem? Please describe.**
Support reading Iceberg tables in cudf-polars (ie. `scan_iceberg`)

**Describe the solution you'd like**
Reading Iceberg tables means the following:

1. Read the data files. (We can already do this since the files are parquet files)
2. Read any of the associate deletion files
3. Filter out the deleted rows.
4. Return the result.

**Describe alternatives you've considered**
N/A

**Additional context**
Add any other context, code examples, or references to existing implementations about the feature request here.