Add environment configuration and documentation for various services

- Created .env.example files for Kafka, Kibana, KodBox, Kong, Langfuse, Logstash, n8n, Nginx, OceanBase, OpenCoze, RocketMQ, TiDB, and TiKV.
- Added README.md and README.zh.md files for OceanBase, RocketMQ, TiDB, and TiKV, detailing usage, configuration, and access instructions.
- Implemented docker-compose.yaml files for OceanBase, RocketMQ, TiDB, and TiKV, defining service configurations, health checks, and resource limits.
- Included broker.conf for RocketMQ to specify broker settings.
- Established a consistent timezone (UTC) across all services.
- Provided optional port overrides in .env.example files for flexibility in deployment.

src/langfuse/.env.example

@@ -0,0 +1,22 @@
+# Langfuse version
+LANGFUSE_VERSION=3.115.0
+
+# Timezone
+TZ=UTC
+
+# Port
+LANGFUSE_PORT=3000
+
+# Database configuration
+POSTGRES_USER=postgres
+POSTGRES_PASSWORD=postgres
+POSTGRES_DB=langfuse
+
+# NextAuth configuration
+NEXTAUTH_URL=http://localhost:3000
+NEXTAUTH_SECRET=  # Generate with: openssl rand -base64 32
+SALT=  # Generate with: openssl rand -base64 32
+
+# Feature flags
+TELEMETRY_ENABLED=true
+LANGFUSE_ENABLE_EXPERIMENTAL_FEATURES=false