add an ux-threejs package

Author: sblondeau

package.json

@@ -21,6 +21,7 @@
         "@rollup/plugin-node-resolve": "^15.3.0",
         "@rollup/plugin-typescript": "^11.1.6",
         "@symfony/stimulus-testing": "^2.0.1",
+        "@types/three": "^0.174.0",
         "@vitest/browser": "^2.1.1",
         "lightningcss": "^1.28.2",
         "playwright": "^1.47.0",

src/Threejs/.gitattributes

@@ -0,0 +1,8 @@
+/.git* export-ignore
+/.symfony.bundle.yaml export-ignore
+/assets/src export-ignore
+/assets/test export-ignore
+/assets/vitest.config.js export-ignore
+/doc export-ignore
+/phpunit.xml.dist export-ignore
+/tests export-ignore