OnCallPagingApi Missing endpoint to list pages

[mbovo]

Describe the bug
OnCallPagingApi has methods to Escalate, Acknowledge, Resolve or Create On-Call Pages but not to list them.
The only way to list them is through the web ui https://app.datadoghq.eu/on-call/pages

To Reproduce
Steps to reproduce the behavior:

1. Try out the example for acknowledging an on-call page found here
2. Try to change the code to list current triggered pages
3. No methods or api endpoints exposed for that.

Expected behavior
A method similar to acknowledge_on_call_page but for listing outstanding pages, with the ability to filter out by responder, status, etc...

Screenshots

Environment and Versions (please complete the following information):

• datadog-api-client==2.41.0

Additional context
The web UI is currently using an unstable API endpoint that differs from what the library is using ie:

• The library:

  datadog-api-client-python/src/datadog_api_client/v2/api/on_call_paging_api.py

  Line 32 in 22e917a

  "endpoint_path": "/api/v2/on-call/pages/{page_id}/acknowledge",

• The web UI: https://app.datadoghq.eu/api/unstable/on-call/pages

If the endpoints is unstable the expected behavior is to have it supported under the unstable feature flag

[github-actions]

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[m-d-johnson]

Any update on this, please?