Feat: Ignore files

[luke-adnav]

Is it possible to mark a file as not to be tracked by undodir? For example log files don't need to be tracked. Every time I open mu lsp log file I get the following error:

Reading undo file: **/vim/undodir/**.local%state%nvim%lsp.log                                                                                                                                                                   
File contents changed, cannot use undo info