Add watchlist export

[frm]

Hey!

I don't know if you want this but since Letterboxd allows you to import a watchlist, I tweaked your code to allow exporting the trakt watchlist as well.

It's triggered by adding a -w flag.

[bbeesley]

Hey man, sorry, I realised I'm like a year late on this 😂I had notifications turned off on this repo for some reason.
Anyway, if you're still interested, happy for this to be merged, but the commit message needs changing for the automated release pipeline to properly version the new package. It's using conventional commits, so your commit message needs to be something like feat: add support for watchlist export. So if you rebase, reword the commit, and push it back up, assuming the tests are all good I'll merge it.

[bbeesley]

As discussed, looks good, just needs the commit message to be changed.

[frm]

Oh wow, I forgot about this. Yep, no worries 👍

[bbeesley]

looks like you still have a failing test mate

[frm]

I reckon I might just have several now, given the updates to the codebase