Function create 

pub async fn create(
    pool: &PgPool,
    actor: &Actor,
    code: &str,
    name: &str,
    description: &str,
    oidc_group: Option<&str>,
    visibility: ProjectVisibility,
) -> AppResult<Project>

Creates a project group. CAD editors and administrators may do so; a CAD editor becomes member and manager of the new group.

Invariants

• Permission: editor role or higher (403 otherwise); linking an identity-provider group is for administrators only (403).
• Locks: none; a duplicate code is refused by the unique index (409).
• Data: a non-administrator creator is added as a manual member and manager; administrators manage every group and are not added.
• Audit: project.create.
• Notifications / webhooks: none.
• Atomic: one transaction.