feat: add postgres storage and remote sync

docker-compose.yml

@@ -0,0 +1,18 @@
+services:
+  postgres:
+    image: postgres:16-alpine
+    container_name: funstat-postgres
+    restart: unless-stopped
+    environment:
+      POSTGRES_DB: ${POSTGRES_DB:-funstat}
+      POSTGRES_USER: ${POSTGRES_USER:-funstat}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-funstat_dev_password}
+    ports:
+      - "${POSTGRES_PORT:-5433}:5432"
+    volumes:
+      - ./local_data/postgres:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD", "pg_isready", "-U", "${POSTGRES_USER:-funstat}"]
+      interval: 10s
+      timeout: 5s
+      retries: 5