Add level flag when downloading bites

[Pradhvan]

Adds level flag to download which level of bites is to be downloaded.

# Show all bites (original behavior)
$ eatlocal download

# Show only beginner bites
$ eatlocal download --level Beginner

# Show only intermediate bites
$ eatlocal download --level Intermediate

# Show only advanced bites
$ eatlocal download --level Advanced

Edge case that I can think of right now

1. Level is not valid so added an exception for it

$ eatlocal download --level advance
⚠ Invalid level: advance.
Valid levels are: advanced, intro, intermediate, newbie, beginner.

[Pradhvan]

@rhelmstedter @bbelderbos whenever you get time can you please look into this PR. Thank You 🐍

[rhelmstedter]

Nicely done.

My one suggestion would be to remove the Optional import. Since we are using python 3.12 we can use the | character. Your type hint can just be level: str | None. Or, if @bbelderbos prefers, we can go find the other | characters and use Optional everywhere.

[Pradhvan]

This is the first time I am working with type hints so I am good with both the approaches you suggested @rhelmstedter

Let me wait for @bbelderbos 's suggestion post that I can make the update.

Let me also see if I can add a test for the same.

[bbelderbos]

Nice, I am happy with these changes. There are a few small things you could do to make it even better, do you want to make those changes? Thanks.

[Pradhvan]

Nice, I am happy with these changes. There are a few small things you could do to make it even better, do you want to make those changes? Thanks.

Sure let me update the PR with the suggested changes. 😄

[Pradhvan]

@bbelderbos updated necessary changes to the code. 🐍

[bbelderbos]

Perfect, thanks!