Add a CI pipeline that builds android APK and create release

[DanBrown47]

🧩 Feature Request

Set up a Continuous Integration (CI) workflow that automatically:

1. Builds the Android APK from the codebase on push to the main branch or on tag creation.
2. Generates a signed or unsigned APK.
3. Attaches the APK as an artifact to a GitHub release (either manual trigger or on version tags).

---

✅ Acceptance Criteria

• GitHub Actions or alternative CI system is configured.
• APK is built automatically on each release tag (e.g., v1.0.0).
• Release is created with the APK attached as an artifact.
• Workflow should be documented under .github/workflows/android-release.yml.