feat: Initial commit for DorkNet Admin Mobile app

- Implemented main application structure using .NET MAUI.
- Added App class to manage navigation between Login and Admin pages.
- Created AppDesign class for consistent UI styling.
- Developed pages: LoginPage, DashboardPage, PlayersPage, RoomsPage, SettingsPage, and AdminTabbedPage.
- Integrated AdminApiClient for API interactions and SecureAdminSettings for secure storage of sensitive data.
- Configured Android and iOS platform-specific files including manifest and app delegate.
- Added README with build instructions and authentication details.

DorkNet.AdminMobile/Platforms/Android/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+  <uses-permission android:name="android.permission.INTERNET" />
+  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+</manifest>

DorkNet.AdminMobile/Platforms/Android/MainActivity.cs

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+using Android.App;
+using Android.Content.PM;
+using Microsoft.Maui;
+
+namespace DorkNet.AdminMobile;
+
+[Activity(
+    MainLauncher = true,
+    ConfigurationChanges =
+        ConfigChanges.ScreenSize |
+        ConfigChanges.Orientation |
+        ConfigChanges.UiMode |
+        ConfigChanges.ScreenLayout |
+        ConfigChanges.SmallestScreenSize |
+        ConfigChanges.Density)]
+public class MainActivity : MauiAppCompatActivity
+{
+}

DorkNet.AdminMobile/Platforms/Android/MainApplication.cs

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+using Android.App;
+using Android.Runtime;
+using Microsoft.Maui;
+using Microsoft.Maui.Hosting;
+
+namespace DorkNet.AdminMobile;
+
+[Application]
+public class MainApplication(nint handle, JniHandleOwnership ownership)
+    : MauiApplication(handle, ownership)
+{
+    protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
+}

DorkNet.AdminMobile/Platforms/iOS/AppDelegate.cs

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+using Foundation;
+using Microsoft.Maui;
+using Microsoft.Maui.Hosting;
+
+namespace DorkNet.AdminMobile;
+
+[Register("AppDelegate")]
+public class AppDelegate : MauiUIApplicationDelegate
+{
+    protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
+}

DorkNet.AdminMobile/Platforms/iOS/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
+  "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDisplayName</key>
+  <string>DorkNet Admin</string>
+  <key>CFBundleIdentifier</key>
+  <string>net.dorknet.adminmobile</string>
+  <key>CFBundleVersion</key>
+  <string>1</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>LSRequiresIPhoneOS</key>
+  <true/>
+  <key>MinimumOSVersion</key>
+  <string>14.2</string>
+  <key>UIDeviceFamily</key>
+  <array>
+    <integer>1</integer>
+    <integer>2</integer>
+  </array>
+  <key>UISupportedInterfaceOrientations</key>
+  <array>
+    <string>UIInterfaceOrientationPortrait</string>
+    <string>UIInterfaceOrientationLandscapeLeft</string>
+    <string>UIInterfaceOrientationLandscapeRight</string>
+  </array>
+  <key>UISupportedInterfaceOrientations~ipad</key>
+  <array>
+    <string>UIInterfaceOrientationPortrait</string>
+    <string>UIInterfaceOrientationPortraitUpsideDown</string>
+    <string>UIInterfaceOrientationLandscapeLeft</string>
+    <string>UIInterfaceOrientationLandscapeRight</string>
+  </array>
+</dict>
+</plist>

DorkNet.AdminMobile/Platforms/iOS/Program.cs

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+using UIKit;
+
+namespace DorkNet.AdminMobile;
+
+public static class Program
+{
+    public static void Main(string[] args)
+    {
+        UIApplication.Main(args, null, typeof(AppDelegate));
+    }
+}