Added UI app.

MangaReader.WinUI/Resources/Fonts.xaml

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+<?xml version="1.0" encoding="utf-8"?>
+<ResourceDictionary
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:vm="using:MangaReader.WinUI.ViewModels">
+
+    <FontFamily x:Key="PoppinsRegular">ms-appx:///Assets/Fonts/Poppins-Regular.ttf#Poppins Regular</FontFamily>
+    <FontFamily x:Key="PoppinsMedium">ms-appx:///Assets/Fonts/Poppins-Medium.ttf#Poppins Medium</FontFamily>
+    <FontFamily x:Key="PoppinsSemiBold">ms-appx:///Assets/Fonts/Poppins-SemiBold.ttf#Poppins SemiBold</FontFamily>
+
+</ResourceDictionary>

MangaReader.WinUI/Resources/Styles.xaml

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+<?xml version="1.0" encoding="utf-8"?>
+<ResourceDictionary
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:Media="using:CommunityToolkit.WinUI.Media">
+
+    <Style TargetType="TextBlock">
+        <Setter Property="FontFamily" Value="{StaticResource PoppinsRegular}" />
+    </Style>
+
+    <Media:AttachedCardShadow x:Key="CommonShadow" Offset="5" BlurRadius="10" Opacity=".4" />
+
+</ResourceDictionary>

MangaReader.WinUI/Resources/ViewModels.xaml

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+<?xml version="1.0" encoding="utf-8"?>
+<ResourceDictionary
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:vm="using:MangaReader.WinUI.ViewModels">
+
+    <vm:ViewModelLocator x:Key="Locator" />
+
+</ResourceDictionary>