Update Integrations and Foundations under Manage

Description

• Move ~"group::integrations" and groupfoundations groups under devopsmanage.
• Replace ~"devops::ecosystem" with devopsmanage.
• Remove ~"devops::ecosystem".

Related to https://gitlab.com/gitlab-org/manage/integrations/team/-/issues/159 and https://gitlab.com/gitlab-org/manage/integrations/team/-/issues/172.