Datadog Log Stream integration for Japan

Feature:
Datadog Log Stream integration for Japan site (ap1.datadog.com).

Description:
In Auth0 Dashboard at Log Stream integration with Datadog, available regions are EU and US1/US3/US5. The Japan region (AP1) is missing, but Datadog offers a special site for the Japan region.

Use-case:
For sending logs in Datadog for japanease customers who are paying a subscription on Datadog Japan site.

Regional Discrepancy: Auth0’s Log Stream integration with Datadog lacks the AP1 (Japan) region, which Datadog explicitly supports with its dedicated site.

I got same issue, and got workaround by EventBrige to call Datadog http-intake API.

Auth0 support and Knowledge Base does not have workaround, but following use-case could resolve this issue.

```mermaid
flowchart LR
  A[Auth0 Log Stream] -->|Partner Event Bus| B[EventBridge Rule]
  B --> C[EventBridge Target]
  C --> D[API Destination]
  D --> E[Datadog Logs HTTP-Intake API]

  subgraph AWS
    B
    C
    D
  end
  subgraph Datadog AP1
    E
  end
```
ref.) EventBridge API destination
https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-api-destinations.html

If any other workaround having, I appreciate to be shared.