Create Discussion (legacy)

**Deprecation Notice:** This endpoint route is deprecated and will be removed from the Teams API. We recommend migrating your existing code to use the new [`Create a discussion`](https://docs.github.com/[email protected]/rest/teams/discussions#create-a-discussion) endpoint. Creates a new discussion post on a team's page. This endpoint triggers [notifications](https://docs.github.com/[email protected]/github/managing-subscriptions-and-notifications-on-github/about-notifications). Cre...