add torchao/experimental CI test

Author: metascroy

.github/workflows/torchao_experimental_test.yml

@@ -0,0 +1,33 @@
+name: Run TorchAO Experimental Tests
+
+on:
+  push:
+    branches:
+      - main
+      - 'gh/**'
+  pull_request:
+    branches:
+      - main
+      - 'gh/**'
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        runner: [macos-14]
+    runs-on: ${{matrix.runner}}
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.10.11
+      - name: Install TorchAO
+        run: |
+          USE_CPP=1 pip install .
+      - name: Run tests
+        run: |
+          python torchao/experimental/tests/test_packed_linear_int8_dynamic_activation_intx_weight_layout.py