Export the training code

**Is your feature request related to a problem? Please describe.**
The initial training setup and implementation is so easy. Retraining is not. Being able to export the code that runs the Train page specifically the train button and "Train again" so it's made easy to create a retrainer tool would be an absolute god send.

**Describe the solution you'd like**
Being able to export the code that runs the Train page specifically the train button and "Train again".

**Describe alternatives you've considered**
So far I've just been struggling to make it work and using ChatGPT to help with limited results.

**Additional context**
I've been using the Retrain a model article to help guide my setup of a retrainer tool but it's not working very well and it's also not very clear on how to do that using SQL though I just resorted to pulling my data into a collection and passing that. A simple way to export the code to a console app or just a snippet so I can run "Train again" but in a console app would be extremely helpful.

Inizia con l’implementazione della Train page, concentrandoti sul train button e sul flusso “Train again”; l’issue non indica file o test specifici. Confronta questo flusso con l’articolo Retrain a model e determina il confine dell’export. Done dovrebbe fornire una console app o uno snippet che renda facile eseguire nuovamente il flusso di training, incluso il caso d’uso SQL richiesto.

Scritto dal modello di indicizzazione a partire dal testo della issue.