allow .🥒 as a file extension

[karl-thomas]

Feature request: I think it would be nice if we could put a "pickle" (it's really a cucumber) as the file extension, in addition to .pkl. this is similar to mojo files accepting .🔥 as the file extension. https://docs.modular.com/mojo/faq.html#why-does-mojo-have-the-file-extension

I would also accept any other pickled food emojis.

[holzensp]

Yeah, absolutely. Actually, Pkl isn't picky; it already does!

[karl-thomas]

well I'll be darned, thank you for humoring me, ahahaha. i wonder how angry that makes the nvim plugin, im sure theres some place i can change the file extension.