GPU accelerated maskeditor rendering (#6767)

## GPU accelerated brush engine for the mask editor

- Full GPU acceleration using TypeGPU and type-safe shaders
- Catmull-Rom Spline Smoothing
- arc-length equidistant resampling
- much improved performance, even for huge images
- photoshop like opacity clamping for brush strokes
- much improved soft brushes
- fallback to CPU fully implemented, much improved CPU rendering
features as well

### Tested Browsers
- Chrome (fully supported)
- Safari 26 (fully supported, prev versions CPU fallback)
- Firefox (CPU fallback, flags needed for full support)



https://github.com/user-attachments/assets/b7b5cb8a-2290-4a95-ae7d-180e11fccdb0



https://github.com/user-attachments/assets/4297aaa5-f249-499a-9b74-869677f1c73b



https://github.com/user-attachments/assets/602b4783-3e2b-489e-bcb9-70534bcaac5e

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6767-GPU-accelerated-maskeditor-rendering-2b16d73d3650818cb294e1fca03f6169)
by [Unito](https://www.unito.io)

package.json

@@ -75,6 +75,7 @@
     "@vitest/coverage-v8": "catalog:",
     "@vitest/ui": "catalog:",
     "@vue/test-utils": "catalog:",
+    "@webgpu/types": "catalog:",
     "cross-env": "catalog:",
     "eslint": "catalog:",
     "eslint-config-prettier": "catalog:",
@@ -112,6 +113,7 @@
     "typescript": "catalog:",
     "typescript-eslint": "catalog:",
     "unplugin-icons": "catalog:",
+    "unplugin-typegpu": "catalog:",
     "unplugin-vue-components": "catalog:",
     "uuid": "^11.1.0",
     "vite": "catalog:",
@@ -176,6 +178,7 @@
     "semver": "^7.7.2",
     "three": "^0.170.0",
     "tiptap-markdown": "^0.8.10",
+    "typegpu": "catalog:",
     "vue": "catalog:",
     "vue-i18n": "catalog:",
     "vue-router": "catalog:",