#244 Text Analysis Tutorial: Setup & Template Walkthrough

[bartleyn]

This PR address issue 244 by adding a tutorial directory and a first tutorial set of notebooks:

• 01_setup_and_eda.ipynb
• 02_train_and_evaluate.ipynb
• 03_serve_and_predict.ipynb

This includes a set of source scripts as well to run the FastAPI model locally, with instructions in the 3rd notebook.

This tutorial shows the following:

1. gets the nlp311 environment setup
2. shows some EDA for the AG_news dataset
3. trains a simple Logistic Regression model for the three labels
4. shows how to use MLFlow to log and compare model performance
5. shows how you can use FastAPI to 'host' the model and give predictions

[chinaexpert1]

He has ran it before and will thoroughly test it again before merging.