Feature/endgame play (#1)

* create endgame play section

* add cache tests

* normalise FENs - trim and fuill move to 1 on addition

* remove svg on root and allow navbar to exist across all pages

* update nav items

lib/chesstrainer_web/live/endgame_live/player_index.ex

@@ -0,0 +1,38 @@
+defmodule ChesstrainerWeb.EndgameLive.PlayerIndex do
+  use ChesstrainerWeb, :live_view
+
+  alias Chesstrainer.Endgames
+
+  @impl true
+  def render(assigns) do
+    ~H"""
+    <Layouts.app flash={@flash}>
+      <.header>
+        Endgames
+        <:subtitle>Pick an endgame to play.</:subtitle>
+      </.header>
+
+      <.table
+        id="player-endgames"
+        rows={@streams.endgames}
+      >
+        <:col :let={{_id, endgame}} label="Key">{endgame.key}</:col>
+        <:col :let={{_id, endgame}} label="Color">{endgame.color}</:col>
+        <:col :let={{_id, endgame}} label="Result">{endgame.result}</:col>
+        <:col :let={{_id, endgame}} label="Rating">{endgame.rating}</:col>
+        <:action :let={{_id, endgame}}>
+          <.link navigate={~p"/endgames/#{endgame}/play"}>Play</.link>
+        </:action>
+      </.table>
+    </Layouts.app>
+    """
+  end
+
+  @impl true
+  def mount(_params, _session, socket) do
+    {:ok,
+     socket
+     |> assign(:page_title, "Endgames")
+     |> stream(:endgames, Endgames.list_endgames())}
+  end
+end