Overhaul zoom transitions

[EnnuiL]

I have to admit: despite being a pioneer of some sorts (or at least the one who has popularized them), Ok Zoomer's zoom transitions have been overshadowed by a certain competitor's take on it, which I consider to be pretty gimmicky with its many curve options! Except that thanks to the element of time being accounted, it means that when zooming out, it will never feel too fast; So it looks like we'll have to one-up those!

I should note that while adding curves and such would be neat, I don't think I'll abandon the Vanilla-like "Smooth" mode, since I still think it's useful for things like imitating a spyglass and such; The "Linear" mode, however, might be one that's long overdue a revamp

[EnnuiL]

I'm pausing this for now; I suspect that maybe if I had higher-resolution ticks, I could do a better job? I would like to try and cook something on that direction;

But for now, #116 and #128 are the top priorities for this year (that is, if I even pull it off correctly)