Replace custom socket implementation with SignalR.

Replace MSAL and custom cookie auth with Microsoft.Identity.EntityFramework
Also some UI redesign to accommodate different login experience.

Shogi.UI/Pages/SearchPage.razor

@@ -0,0 +1,11 @@
+@page "/search"
+
+<main class="SearchPage PrimaryTheme">
+	<h3>Find Sessions</h3>
+
+	<GameBrowser />
+</main>
+
+@code {
+
+}