Convert championship controller to html

* Update championship index action
* Update championships controller show action
* Update championship live for components
* Remove unused championship code and add back tests

lib/ex338_web/components/core_components.ex

@@ -777,6 +777,17 @@ defmodule Ex338Web.CoreComponents do
   attr :class, :string, default: nil
   slot :inner_block, required: true
 
+  def section_header(assigns) do
+    ~H"""
+    <h3 class={["py-2 pl-4 mt-4 text-base text-gray-700 sm:pl-6", @class]}>
+      <%= render_slot(@inner_block) %>
+    </h3>
+    """
+  end
+
+  attr :class, :string, default: nil
+  slot :inner_block, required: true
+
   def legacy_table(assigns) do
     ~H"""
     <div class={["md:max-w-md", @class]}>

lib/ex338_web/controllers/championship_controller.ex

@@ -1,13 +1,13 @@
 defmodule Ex338Web.ChampionshipController do
-  use Ex338Web, :controller
+  use Ex338Web, :controller_html
 
   alias Ex338.Championships
   alias Ex338.FantasyLeagues
 
   def index(conn, %{"fantasy_league_id" => league_id}) do
     render(
       conn,
-      "index.html",
+      :index,
       championships: Championships.all_for_league(league_id),
       fantasy_league: FantasyLeagues.get(league_id)
     )
@@ -16,7 +16,7 @@ defmodule Ex338Web.ChampionshipController do
   def show(conn, %{"fantasy_league_id" => league_id, "id" => id}) do
     render(
       conn,
-      "show.html",
+      :show,
       championship: Championships.get_championship_by_league(id, league_id),
       fantasy_league: FantasyLeagues.get(league_id)
     )