Add ID for each import to enable use of incremental syncs

[Dynnammo]

We'll use an ELT tool to synchronize data.

We therefore need to have an id column, uniq for each line.

• Adapt the script to create a column id with computed hash
• Import function to_sql must use such column

Documentation :
https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.to_sql.html
https://stackoverflow.com/questions/51178961/hash-each-row-of-pandas-dataframe-column-using-apply