Move few shot examples of query, JSON pairs to the few_shot.py file

[stephenlprice]

Move the few shot examples that are currently in the bottom of the nlq_to_vds.py file into the few_shot.py file and expand on the number of few shot examples. While this solution is still immature, we may want to create a set of generic few shot examples as well as data source specific few shot examples for the data sources that we want to query and demo.

Definition of Done

• few_shot.py contains at least 10 nlq, JSON pairs from superstore and 2 other generic data sets
• the nlq_to_vds prompt reads from the few_shot.py file
• the current few shot examples that are in the nlq_to_vds.py file are removed

[stephenlprice]

I completed all definitions except that I think few shot examples should not be hard coded to generic data sets but specific to each datasource and available via metadata.

There is no place to store this data on the Tableau side but it can be associated with a local store of data that enhances what we can get upstream