Initial commit of 001code-html Scratch frontend project.

Includes scratch-gui, scratch-vm, scratch-blocks, scratch-render, scratch-l10n, and deployment config.

Co-authored-by: Cursor <cursoragent@cursor.com>

scratch-render/test/fixtures/MockSkin.js

@@ -0,0 +1,23 @@
+const Skin = require('../../src/Skin');
+
+class MockSkin extends Skin {
+    set size (dimensions) {
+        this.dimensions = dimensions;
+    }
+
+    get size () {
+        return this.dimensions || [0, 0];
+    }
+
+    set rotationCenter (center) {
+        this._rotationCenter[0] = center[0];
+        this._rotationCenter[1] = center[1];
+        this.emitWasAltered();
+    }
+
+    get rotationCenter () {
+        return this._rotationCenter;
+    }
+}
+
+module.exports = MockSkin;