chore(ci): add "Noir End" step to ease noir version bumps

.github/workflows/test.yml

@@ -42,3 +42,26 @@ jobs:
 
       - name: Run formatter
         run: nargo fmt --check
+
+  # This is a job which depends on all test jobs and reports the overall status.
+  # This allows us to add/remove test jobs without having to update the required workflows.
+  tests-end:
+    name: Noir End
+    runs-on: ubuntu-latest
+    # We want this job to always run (even if the dependant jobs fail) as we want this job to fail rather than skipping.
+    if: ${{ always() }}
+    needs: 
+      - test
+      - format
+
+    steps:
+      - name: Report overall success
+        run: |
+          if [[ $FAIL == true ]]; then
+              exit 1
+          else
+              exit 0
+          fi
+        env:
+          # We treat any cancelled, skipped or failing jobs as a failure for the workflow as a whole.
+          FAIL: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') || contains(needs.*.result, 'skipped') }}