chore: upload acir artifacts as a github artifact

.github/workflows/auto-pr-rebuild-script.yml

@@ -1,13 +1,40 @@
 name: Rebuild ACIR artifacts
 
 on:
+  pull_request:
   push:
     branches:
       - master
 
 jobs:
+  check-artifacts-requested:
+    name: Check if artifacts should be published
+    runs-on: ubuntu-22.04
+    outputs:
+      publish: ${{ steps.check.outputs.publish }}
+
+    steps:
+      - name: Check if artifacts should be published
+        id: check
+        run: |
+          if [ ${{ github.ref_name }} == "master" ]; then
+            # Always publish on master
+            echo "publish=true" >> "$GITHUB_OUTPUT"
+          else
+            # Only publish on PRs if label is set
+            HAS_ARTIFACT_LABEL=$(gh pr view $PR --repo $REPO_URL --json labels | jq '.labels | any(.name == "publish-acir")')
+            echo "publish=$HAS_ARTIFACT_LABEL" >> "$GITHUB_OUTPUT"
+          fi
+        env:
+          GH_TOKEN: ${{ github.token }}
+          PR: ${{ github.event.pull_request.number }}
+          REPO_URL: ${{ github.repositoryUrl }}
+
   build-nargo:
+    name: Build nargo binary
     runs-on: ubuntu-22.04
+    needs: [check-artifacts-requested]
+    if:  ${{ needs.check-artifacts-requested.outputs.publish == true }}
     strategy:
       matrix:
         target: [x86_64-unknown-linux-gnu]
@@ -42,6 +69,7 @@ jobs:
           retention-days: 3
 
   auto-pr-rebuild-script:
+    name: Rebuild ACIR artifacts
     needs: [build-nargo]
     runs-on: ubuntu-latest
 
@@ -71,10 +99,19 @@ jobs:
           chmod +x ./rebuild.sh
           ./rebuild.sh
 
+      - name: Upload ACIR artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: acir-artifacts
+          path: ./tooling/nargo_cli/tests/acir_artifacts
+          retention-days: 10
+
       - name: Check for changes in acir_artifacts directory
         id: check_changes
         run: |
-          git diff --quiet tooling/nargo_cli/tests/acir_artifacts/ || echo "::set-output name=changes::true"
+          if [ ${{ github.ref_name }} == "master" ]; then
+            git diff --quiet tooling/nargo_cli/tests/acir_artifacts/ || echo "::set-output name=changes::true"
+          fi
 
       - name: Create or Update PR
         if: steps.check_changes.outputs.changes == 'true'