Add more examples to the SQLite logger docs

[paulpalmieri]

• provide a quick snippet on how to use it (especially get the df out of SQL Lite)

  
  import sqlite3
  import pandas as pd

Connect to the SQLite database

conn = sqlite3.connect('lavague_logs.db')

Read data from a table into a DataFrame

df = pd.read_sql('SELECT * FROM Logs', conn)

- Add the code to reinflate some columns, such as engine logs:

import ast ast.literal_eval(df.iloc[-1]["engine_log"])

- export of screenshots did not work, find out how to make it work and add to docs. we may need to first convert to something like byte array before logging to the DB