Resizing of digits during calculation

So as the font used in opencalc is huge, so it is not possible to put so many numbers on the screen at the same time, which makes the numbers shift like this

https://github.com/Darkempire78/OpenCalc/assets/113085944/fc297f98-647b-4152-b97b-988fb9b689c9

I think a better approach can be this

https://github.com/Darkempire78/OpenCalc/assets/113085944/ea0e46a5-25e8-49a8-bf5d-744eb1ddcdbc

This isn't a huge issue or inconvenience but I think it will make the app look more refined. Thank you for your work.