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/kong/.env.example

@@ -0,0 +1,26 @@
+# Kong version
+KONG_VERSION=3.8.0-alpine
+
+# PostgreSQL version
+POSTGRES_VERSION=16.6-alpine3.21
+
+# Timezone
+TZ=UTC
+
+# Database password
+KONG_DB_PASSWORD=kongpass
+
+# Kong Admin API configuration
+KONG_ADMIN_ACCESS_LOG=/dev/stdout
+KONG_ADMIN_ERROR_LOG=/dev/stderr
+KONG_ADMIN_LISTEN=0.0.0.0:8001
+
+# Kong Proxy configuration
+KONG_PROXY_ACCESS_LOG=/dev/stdout
+KONG_PROXY_ERROR_LOG=/dev/stderr
+
+# Port overrides (optional)
+# KONG_PROXY_PORT_OVERRIDE=8000
+# KONG_PROXY_SSL_PORT_OVERRIDE=8443
+# KONG_ADMIN_PORT_OVERRIDE=8001
+# KONG_ADMIN_SSL_PORT_OVERRIDE=8444