Feature request: Allow uploading of subtitle files for chordify songs

I would like to play and sing along chordify songs that do not yet provide lyrics.

I am able to create my own lyrics files as subtitles (eg. as *.srt file format).

It would be great to have a way to upload a subtitle file to my songs in the setlist and show them as they are shown for videos that already have lyrics (scrolling when the song is played).

For copyright reasons it may be enough that the subtitle file is only visible for me (not for all users of chordify) but of course it would be great if everyone could benefit from this.