In the screen showing templates also show repo url if public

[stan-dot]

As a user I'd like to see where is a given template coming from, to be able to compare best practices with public templates and debug my own templates.

Changes required would be to: backend/graph-proxy/src/graphql/workflow_templates.rs and frontend/dashboard/src/routes/templateview.tsx

Unclear - where is that initial information coming from?
At the moment workflows.rs has a Metadata struct

#[derive(Debug)]
pub(super) struct Metadata {
    /// The name given to the workflow, unique within a given visit
    name: String,
    /// The visit the Workflow was run against
    visit: Visit,
}

there seems to be an abscence of an similar metadata system for templates