Added chapter leader card to chapters helper

Used to render chapter leader on the chapter show page

app/helpers/chapters_helper.rb

@@ -1,2 +1,17 @@
 module ChaptersHelper
+  def chapter_leader_card(chapter)
+    leader = UsersChapter.find_by(chapter_id: chapter.id, leader: true).user
+    image_tag = image_tag("https://github.com/#{leader.github_username}.png", size: "207x97")
+    name = UsersChapter.find_by_chapter(chapter.id)
+
+    content_tag(:div, class: "bg-gray-100 rounded-md shadow-md overflow-hidden inline-block") do
+      content_tag(:div, class: "h-48") do
+        image_tag
+      end +
+        content_tag(:div, class: "bg-gray-200 px-4 py-2 my-4") do
+          content_tag(:p, name, class: "text-gray-800 font-bold") +
+            content_tag(:p, leader.github_username)
+        end
+    end
+  end
 end