New feature propose: TransitionHelper

[hoshiizumiya]

https://github.com/CommunityToolkit/Labs-Windows/tree/main/components/TransitionHelper

[HO-COOH]

I looked at it before, and I actually tried flattened out the animations generated by it manually. I think the APIs are way too verbose even in XAML, and the parameters are all implicit, and many of those implicit parameters are actually problematic.

The Microsoft store app seems to be using this, and you should have noticed that after you hover your mouse on an app's overview, it expands with an animation similar to this, and the fonts are blury.

I can maybe look into ways to improve this while porting the major functionalities, but not very high on my list tho.