feat: Physical pixel snapping

[Tropix126]

This is a rewrite of #245 that's up to date. Same deal - it just rounds all elements to render on physical pixel boundaries rather than relying subpixel antialiasing which results in blurry borders or incorrect rendering in the case of #836.

[codecov]

Codecov Report

Attention: Patch coverage is 40.38462% with 31 lines in your changes missing coverage. Please review.

Project coverage is 75.92%. Comparing base (13f67c5) to head (b1b9fd1).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/devtools/src/tabs/style.rs	0.00%	8 Missing ⚠️
crates/core/src/elements/rect.rs	16.66%	5 Missing ⚠️
crates/core/src/elements/svg.rs	0.00%	5 Missing ⚠️
crates/state/src/style.rs	77.27%	5 Missing ⚠️
crates/core/src/elements/image.rs	0.00%	4 Missing ⚠️
crates/core/src/node.rs	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #837      +/-   ##
==========================================
- Coverage   76.04%   75.92%   -0.12%     
==========================================
  Files         205      205              
  Lines       23235    23290      +55     
==========================================
+ Hits        17670    17684      +14     
- Misses       5565     5606      +41     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[marc2332]

The switch animation looks weird now, and I don't think disabling the rounding just for the switch is a good solution either.

[Tropix126]

The switch animation looks weird now, and I don't think disabling the rounding just for the switch is a good solution either.

Any suggestions on what I should do here instead? I'll look into the switch animation.

[Tropix126]

I've fixed the alignment of the switch by disabling rounding. I'm not sure what's causing the animation to look weird (it seems fine to me although I might be missing something). I'm open to suggestions for alternatives other than disabling rounding on the switch, but any solution other than disabling it is probably going to inevitably mess up on some scale factors.

Before (offcenter, pixel snapped)	After (centered via antialiasing)

[marc2332]

Try resizing the window vertically.

Eventually you will see how the inner circle gets missaligned

When this happens and you run the animation, it will appear as:

Recording.2024-09-14.184639.mp4

[Tropix126]

Hmm... Okay try now, I think it should be fixed on switch.