Improve Parquet documentation

### Describe the enhancement requested

Currently the parquet docs have gaps and appear outdated. There have been several issues in the past where users reported it. (Example: #2914)
One of the suggestions from the community is to introduce a Cookbook (similar to Apache Arrow) with simple examples and docs to allow users to adopt parquet easily and improve the ecosystem support.
This issue tracks the effort for improved docs/cookbooks/tutorials.

### Component(s)

_No response_

Start by reviewing the existing Parquet documentation and the concerns recorded in issue #2914 to identify the current gaps. Define the cookbook, examples, and tutorials needed before making changes. Done means the documentation is updated with clear adoption guidance and the agreed examples are available.

Written by the indexing model from the issue text.