chore: import upstream snapshot with attribution

examples/subgroups-usage/package.json

@@ -0,0 +1,25 @@
+{
+  "name": "subgroups-usage",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "start": "parcel src/subgroups_usage.html --port 8888",
+    "build": "parcel build src/subgroups_usage.html --dist-dir lib"
+  },
+  "devDependencies": {
+    "buffer": "^5.7.1",
+    "crypto-browserify": "^3.12.1",
+    "events": "^3.3.0",
+    "parcel": "^2.8.3",
+    "process": "^0.11.10",
+    "stream-browserify": "^3.0.0",
+    "string_decoder": "^1.3.0",
+    "tslib": "^2.3.1",
+    "typescript": "^4.9.5",
+    "url": "^0.11.3",
+    "vm-browserify": "^1.1.2"
+  },
+  "dependencies": {
+    "@mlc-ai/web-llm": "^0.2.84"
+  }
+}