Display the index type in the schema viewer

[raddevon]

This schema:

using extension pg_trgm version '1.6';
module default {
    type Issue {
        index ext::pg_trgm::gin on (.title);
        property title: std::str;
    };
};

appears like this in the UI:

Can we also show the index type in the schema viewer? This can cause confusion for users who may think their index is not of the correct type.