Filter groups section DSL definition for table configuration.

Organizes filters into collapsible groups, independent of filter definitions.

Example

filter_groups do
  group :primary do
    filters [:search]
    collapsible false
  end

  group :advanced do
    filters [:status, :issue_type, :site_id]
    collapsible true
    collapsed true
    columns 3

    ui do
      label "Advanced Search"
      icon "hero-funnel"
    end
  end
end