fix: support ellipse, support fill, support curves

[mateuszJS]

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[Copilot]

Pull Request Overview

This PR enhances SVG parsing capabilities by adding support for ellipse elements, fill colors, and improved curve handling. The changes restructure the SVG processing system to support more sophisticated shape rendering with visual properties.

• Adds ellipse parsing functionality using cubic Bézier curve approximation
• Implements fill color support with CSS color parsing capabilities
• Refactors shape creation to handle visual properties and improves rendering performance

Reviewed Changes

Copilot reviewed 11 out of 16 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/utils/getSvgSource.ts	Removes entire SVG source utility function
src/textures.ts	Refactors to use external shape creation module and OffscreenCanvas
src/shapes/parseEllipse.ts	Adds new ellipse parsing with Bézier curve approximation
src/shapes/parseColor.ts	Implements CSS color parsing using canvas API
src/shapes/createShape.ts	New centralized shape creation with property support
src/logic/shapes/shapes.zig	Updates Shape struct to use ShapeProps for visual properties
src/logic/index.zig	Updates add_shape function signature to accept properties
src/WebGPU/programs/drawShape/shader.wgsl	Adds fill-only rendering support and optimizations
src/WebGPU/programs/drawShape/getProgram.ts	Moves uniform buffer creation inside render loop
src/WebGPU/getTexture/index.ts	Code formatting improvements and OffscreenCanvas migration
src/WebGPU/getTexture/createCheckedImageData.ts	Migrates from document.createElement to OffscreenCanvas