chore: Add CI check job to consolidate status (#696)

## Summary

* Add CI check job to consolidate status

## Additional Context

* As in the inline comment:
> This job is used as the PR required actions check, allows for changes
to other steps in the future without breaking PR requirements.

---

### AI Usage

While CrossPoint doesn't have restrictions on AI tools in contributing,
please be transparent about their usage as it
helps set the right context for reviewers.

Did you use AI tools to help write this code? No

.github/workflows/ci.yml

@@ -89,3 +89,21 @@ jobs:
           name: firmware.bin
           path: .pio/build/default/firmware.bin
           if-no-files-found: error
+
+  # This job is used as the PR required actions check, allows for changes to other steps in the future without breaking
+  # PR requirements.
+  test-status:
+    name: Test Status
+    needs:
+      - build
+      - clang-format
+      - cppcheck
+    if: always()
+    runs-on: ubuntu-latest
+    steps:
+      - name: Fail because needed jobs failed
+        # Fail if any job failed or was cancelled (skipped jobs are ok)
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+        run: exit 1
+      - name: Success
+        run: exit 0