Add missing workflow that precommits should have added cc @hanickadot

.github/workflows/build-daily-clang_p3309.yml

@@ -0,0 +1,24 @@
+### DO NOT EDIT - created by a script ###
+name: clang_p3309 via clang p3309-trunk
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+  workflow_dispatch:
+
+jobs:
+  daily-build:
+    runs-on: [ 'self-hosted', 'ce', 'ubuntu' ]
+    steps:
+      - name: Start from a clean directory
+        uses: AutoModality/action-clean@v1.1.0
+      - uses: actions/checkout@v4
+      - name: Run the build
+        uses: ./.github/actions/daily-build
+        with:
+          image: clang
+          name: clang_p3309
+          command: build.sh
+          args: p3309-trunk
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}