[Feature Request] Remember tilling position per window

**Describe the feature you'd like**
it would be nice to have a setting to remember the last tilling position per window.

I use a simple layout with two tiles: A tiny tile for social apps like telegram, WhatsApp, Instagram... And a bigger tile to the right with everything else (browser, music media player and so).


With the new auto tilling feature the new created window will always open in the vacant tile. But this is not always the best tile. In my case, the best tile for Whatsapp, telegram, Instagram... is always the left

Can we have an option to remember the tile used by a window and restore it to there?

Thank you very much for this amazing extension!

No file, test, or entry point is named. Begin by locating the auto-tiling window-placement flow and determine how a window's prior tile could be remembered and restored; done means new windows return to their previously used tile without disrupting vacant-tile placement.

Written by the indexing model from the issue text.