feat: Initial Tamagotchi as a Service 🐣

- 3-tier architecture: Frontend (Nginx) → API (Node.js) → PostgreSQL
- Custom Prometheus metrics: hunger_level, happiness_score, energy_level
- Creature decay loop: stats degrade every 15 seconds
- Bilingual UI (EN/FR)

frontend/Dockerfile

@@ -0,0 +1,6 @@
+FROM nginx:alpine
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+COPY index.html /usr/share/nginx/html/
+COPY style.css /usr/share/nginx/html/
+COPY app.js /usr/share/nginx/html/
+EXPOSE 80