Introduce core components for "Escape From Teacher" game: server, client, physics, asset system, and protocol definitions. Add Docker-Compose setup for Redis and NATS infrastructure.

docker-compose.yml

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+services:
+  # 🧠 REDIS - Das Gedächtnis
+  # Speichert: Wer ist wo? (Room Registry), Highscores, Asset-Config
+  redis:
+    image: redis:7-alpine
+    container_name: escape_redis
+    ports:
+      - "6379:6379"
+    volumes:
+      - redis_data:/data
+
+  # ⚡ NATS - Das Nervensystem
+  # Vermittelt: Inputs und Game-States zwischen Pods (Gateway <-> Host)
+  nats:
+    image: nats:alpine
+    container_name: escape_nats
+    ports:
+      - "4222:4222"  # Client Port (für unsere Go Apps)
+      - "8222:8222"  # Dashboard / Monitoring
+    command: "-js"   # JetStream aktivieren (optional, aber gut für später)
+
+volumes:
+  redis_data: