Import song lyrics from TXT files (like ProPresenter)

Lot of lyrics come as plain text — copied from a website, a notes app, or a `.txt` file from a team member. Right now there's no quick way to import them into Presenter without creating a song manually and pasting slide by slide.

ProPresenter already does this: import a `.txt` file, blank lines split into slides, filename becomes the title. Would be great to have the same in Presenter.

Thanks!