Add tag list component to process feed

Remember that this component (widget/feeds/process) is displayed both in
the home page and in the target index.

spec/components/widget/feeds/process_component_spec.rb

@@ -0,0 +1,23 @@
+require "rails_helper"
+
+describe Widget::Feeds::ProcessComponent, type: :component do
+  let(:process) { create(:legislation_process, sdg_goals: [SDG::Goal[1]]) }
+  let(:component) { Widget::Feeds::ProcessComponent.new(process) }
+
+  before do
+    Setting["feature.sdg"] = true
+    Setting["sdg.process.legislation"] = true
+  end
+
+  it "renders a card with link" do
+    render_inline component
+
+    expect(page).to have_link href: "/legislation/processes/#{process.to_param}"
+  end
+
+  it "renders a plain tag list" do
+    render_inline component
+
+    expect(page).to have_css("img[alt='1. No Poverty']")
+  end
+end