Read from the compressed ZSTD format

[outusuke]

Add the ability to read the puzzle directly without extracting it

[brianch]

Hi, do you mean to save disk space?

I don't think it's possible, unfortunately.

One thing we might consider is importing the csv to the sqlite database we use for favorites, which would reduce the size a bit and allow for faster searches, but it adds yet another step at the beginning and it's one more thing that can fail 😅

That said, I should test this a bit one of these days. See how long it would take for example.

[outusuke]

It was just some thoughts that I had while reading a text file using zstdcat

Lichess puzzle weighs only 200MB~ when compressed, while when decompressed it goes up to 800MB~. It would be interesting if some combination using zstd could be possible, since it's the format that comes when downloading