Add a section on Performance Improvement

[PProfizi]

📝 Description of the example

Add a whole section called Improve Performance just like in PyDPF-Post.

• Add an example showcasing best practices for field data extraction / manipulation: how to loop on data, or how NOT to loop. How to work with the Field as a list, as a dict... Benchmark the different ways people may tend to do it, with notes stating to NOT do it that way.

• Ensure other examples apply these best practices

• Add an example showcasing the use of as_local() when the server is remote.

• Move here example on chunk evaluation for big data

📁 Files needed for running the example

NA