[CHANGE] Added dev page

Manager.App/Components/Pages/Development.razor

@@ -0,0 +1,9 @@
+@page "/Development"
+@using Manager.App.Components.Application.Dev
+<title>Development page</title>
+
+<MudTabs Outlined Position="Position.Left" PanelClass="pa-4" ApplyEffectsToContainer Style="height: 100%">
+    <MudTabPanel Text="Authentication">
+        <AuthenticationHasher />
+    </MudTabPanel>
+</MudTabs>

Manager.App/Components/Pages/Development.razor.cs

@@ -0,0 +1,8 @@
+using Microsoft.AspNetCore.Components;
+
+namespace Manager.App.Components.Pages;
+
+public partial class Development : ComponentBase
+{
+    
+}