When deleting or renaming .fnl files, can we prompt the user if they'd like to remove or modify the .lua file?

[Olical]

Maybe we should just delete the .lua file if we can't find a matching .fnl file? I think a cleanup process would be quite useful so we don't ever end up with hanging .lua files the user needs to keep track of.

The .lua files already contain a comment that points to their source file, maybe auditing those comments is the best way to do this.

We could have a command that will do two things:

• Scan the .lua files for comments that point to their .fnl source
• Prompt the user to remove orphaned .lua files if they want
• Re-compile all .fnl files to patch up any gaps

This behaviour would handle any kind of file system operations from in or outside of Neovim quite nicely.