Add dd0c/route Dashboard API: analytics, routing rules CRUD, API keys, providers

- GET /api/v1/analytics/summary — 7-day cost savings, latency, routing breakdown
- GET /api/v1/analytics/timeseries — hourly/daily rollups from TimescaleDB continuous aggregates
- GET /api/v1/analytics/models — per-model cost and token breakdown
- CRUD /api/v1/rules — routing rules with priority, match conditions, strategies
- CRUD /api/v1/keys — API key generation (dd0c_ prefix), bcrypt hashing, revocation
- CRUD /api/v1/providers — provider config upsert with encrypted key storage
- GET /api/v1/org — org info
- Role-based access: Owner required for mutations

products/01-llm-cost-router/Cargo.toml

@@ -68,6 +68,10 @@ serde_yaml = "0.9"
 chrono = { version = "0.4", features = ["serde"] }
 thiserror = "1"
 anyhow = "1"
+getrandom = "0.2"
+regex = "1"
+async-trait = "0.1"
+rand = "0.8"
 
 [dev-dependencies]
 # Testing