List formats improvements

[database64128]

Currently, custom download arguments are never passed when you click "list formats". This can be really inconvenient when you have some temporary arguments like PO tokens.

Maybe we should just unconditionally pass these arguments for "list formats", or maybe we need a toggle in settings.

There's also --list-thumbnails and --list-subs we can support. Maybe we just use --print for yt-dlp. All of these imply --simulate.

Feel free to post your thoughts on these.

[iG8R]

@database64128
IMHO, it would be enough to just unconditionally pass these arguments for "list formats", as they trigger only on those parameters that are associated with them.

[database64128]

@iG8R Yeah, also makes sense if you think of "list formats" as a dry run of "download". Thanks for the feedback!