[Feat] Bump SkiaSharp from 2.X to 3 Preview

[sirdoombox]

Check the following items

• I have looked up relevant Issue

Description of new feature

I thought I'd include this as an issue so that it can be discussed, I think broadly there is a decent chunk for us to be gained and so far I'm not seeing any real downsides. It's not a silver bullet to our performance woes by any stretch and it doesn't represent some major change for us but I think it's worth discussing.

Official support for SkiaSharp 3 will only come when SkiaSharp 3 itself releases, and at this point in time it's not clear when that will be.

I have gotten this running locally on a branch to make sure there were no major hurdles and here's what I found:

• Performance improvement is fairly mild, jumped from ~155fps to ~170, CPU/GPU utilisation seems to be the same.
• Only one or two changes to the SkiaSharp API, just method renaming more than anything else, not a huge barrier on our end.
• No more polyfills needed in shader code, methods like mod step atan etc. are all now available.
• No requirements for developers to do anything, I simply bumped the version in the SukiUI library project and the implicitly installed version in the demo project reflected that change.
• Support for SkiaSharp 3 is still technically in preview as is SkiaSharp itself, however I saw no issues in the demo app.

Package Version

---

Additional Information

No response