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/harbor/.env.example

@@ -0,0 +1,23 @@
+# Harbor version
+HARBOR_VERSION=v2.12.0
+
+# Timezone
+TZ=UTC
+
+# Harbor secrets (generate random strings for production)
+HARBOR_CORE_SECRET=
+HARBOR_JOBSERVICE_SECRET=
+
+# Database configuration
+POSTGRES_PASSWORD=changeit
+REDIS_PASSWORD=
+
+# Admin password
+HARBOR_ADMIN_PASSWORD=Harbor12345
+
+# External URL
+HARBOR_EXTERNAL_URL=http://localhost:80
+
+# Port overrides (optional)
+# HARBOR_HTTP_PORT_OVERRIDE=80
+# HARBOR_HTTPS_PORT_OVERRIDE=443