Adding this file to your LiveSplit will make it pause automatically when your game is loading during a run. However, you will still have to split yourself.

Add the file via edit layout -> + -> control -> scriptable auto splitter. Double click 'scriptable auto splitter', then choose the tab with the same name and search for the file on your computer. Finally, rmb -> compare against -> game time.

Restart LiveSplit to be sure it loads correctly

Enjoy your load free time.

Props to tzann. Check out his runs!