plugins/governance/v1.7.0

## Plugin Release: governance v1.7.0

- feat: routing rules and the complexity router are extracted into the dedicated `routing` plugin: governance now runs at priority 4 and routing at 5, `PublishRoutingAllowlist` and `LoadBalanceProvider` are exported on `GovernancePlugin` and `BaseGovernancePlugin` and are called from the routing plugin after rule evaluation instead of from governance's `PreRequestHook`, `runPreRequestRouting` is removed, and `ReloadRoutingRule`, `RemoveRoutingRule` and the routing rule and complexity analyzer handlers leave `GovernanceManager` and `GovernanceHandler` for `RoutingHandler` under `/api/routing/*` (with deprecated `/api/governance/*` aliases) (#6144, #6145, #6146)
- feat: batch usage reporting: `ReportBatchUsage` applies settled batch cost, tokens and requests to every budget and rate limit on a `BatchUsageReport` exactly once per request ID via a claim/release marker with a 7-day TTL, and charges the creating user's tiers when `UserID` is present; `BumpBudgetUsage` and `BumpRateLimitUsage` are added to `GovernanceStore`; governance IDs, including VK-scoped, user-scoped and global wildcard budgets and rate limits, are collected for batch-create requests that carry no model (thanks [@SahilChoudhary22](https://github.com/SahilChoudhary22)!) (#5295, #6410, #6505)
- feat: honor `BifrostContextKeySkipModelCheck` in `EvaluateVirtualKeyRequest` so evaluate-only requests such as `/inspect` bypass the model allowlist while budgets, rate limits and provider checks still apply (#6479)
- feat: add a no-op `HTTPTransportPreAuthHook` for the new pre-authentication transport phase (#6375)
- chore: upgraded core to v1.8.0 and framework to v1.6.0

### Installation

```bash
# Update your go.mod to use the new plugin version
go get github.com/maximhq/bifrost/plugins/governance@v1.7.0
```

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_This release was automatically created from version file: `plugins/governance/version`_