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/oceanbase/.env.example

@@ -0,0 +1,22 @@
+# OceanBase version
+OCEANBASE_VERSION=4.3.3.1-106000012024110114
+
+# Timezone
+TZ=UTC
+
+# Root password
+OB_ROOT_PASSWORD=oceanbase
+
+# Cluster configuration
+OB_CLUSTER_NAME=obcluster
+OB_TENANT_NAME=test
+OB_TENANT_PASSWORD=oceanbase
+
+# Resource limits
+OB_MEMORY_LIMIT=8G
+OB_DATAFILE_SIZE=10G
+OB_LOG_DISK_SIZE=6G
+
+# Port overrides (optional)
+# OCEANBASE_SQL_PORT_OVERRIDE=2881
+# OCEANBASE_RPC_PORT_OVERRIDE=2882