Summary

Adds two SurrealDB service templates:

1. SurrealDB Standalone (surrealdb.yaml)

• File-based storage (RocksDB)
• Single container, simple deployment
• Auth via SERVICE_USER/SERVICE_PASSWORD

2. SurrealDB with TiKV (surrealdb-with-tikv.yaml)

• Distributed storage via TiKV + PD
• Horizontal scaling support
• 3 services: SurrealDB, PD (Placement Driver), TiKV

Both templates include health checks and persistent volumes.

Related discussions: #3587, #4013

Fixes #7642 /claim #7642