Update identify command

[peterjaap]

Add identify command to find possible columns to anonimize.

It should;

• [x] Loop over all tables in a given database
• [x] Loop over all columns in every table
• [x] Check if the column is (partly?) named like a formatter that is available (firstname, email, etc)
• [x] For every identified column, ask whether a yaml entry should be created in a custom yaml file
• [ ] Get the list of excluded tables dynamically from the YAML files
• [ ] Not just exclude the whole table but take given column names into account