Add level column to enrich the table of eatlocal download

[Pradhvan]

• Added a level column when all bites are downloaded with the eatlocal download command

• The level column is not shown on $ eatlocal download --level <bite level> since we are already filtering the bites so it would not make sense to have the column.

Closes #64

[Pradhvan]

@bbelderbos @rhelmstedter thanks for the suggestions, refactored the code with some minor tweaks and on the tests.

Good for review now. 🐍

[bbelderbos]

Thanks @Pradhvan - eatlocal 1.2.1 pushed to pypi

[Pradhvan]

Thanks @Pradhvan - eatlocal 1.2.1 pushed to pypi

That's two releases in one week, eatlocal is on a roll 🚀