[FEAT]: Support including custom properties in OIDC claims (organization level)

### Describe the need

It would be nice if the provider supported the recently released (march 2026) functionality for including repository custom properties in OIDC claims at the organization level.

Context: https://github.blog/changelog/2026-03-12-actions-oidc-tokens-now-support-repository-custom-properties/

The GitHub API fully supports both the creation and deletion of these inclusions:

- https://docs.github.com/en/rest/actions/oidc?apiVersion=2026-03-10#create-an-oidc-custom-property-inclusion-for-an-organization
- https://docs.github.com/en/rest/actions/oidc?apiVersion=2026-03-10#delete-an-oidc-custom-property-inclusion-for-an-organization

### SDK Version

_No response_

### API Version

_No response_

### Relevant log output

```shell

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### Code of Conduct

- [x] I agree to follow this project's Code of Conduct