Customer feedback: Document references in VSCode

[nhu-do]

Original issue: copilot-extensions/user-feedback#26

---

When I use document references to show references in the chat, like specified here, the references are shown in the VSCode IDE as urls only.

I would like to know:

which icons are available in the display_icon metadata
why is only the url displayed an NOT the display_name ?

    copilot_references: [
        {
            type: "myType",
            id: `docref-${i}`,
                    data: {
                      url: ref.url,
                      title: ref.title,
                    },
                    metadata: {
                      display_name: ref.title,
                      display_icon: "",
                      display_url: ref.url,
                    },
        }
    ],

Expected behavior
When I specify a display_name in the document references metadata I expect the IDE to display this name and not only the url.

Screenshots

cc: @Nils-Schiwek