Refactor activation handling and introduce entity system

Added new `ActivationHandler` class for folder initialization.
Added `ProjectService` class for project-related operations.
Added `Ghost.Entities` project with entity management classes.
Added `EngineEditorWindow` for enhanced user interface.

Changed project files to restructure dependencies and remove unused references.
Changed `ProjectRepository` to use asynchronous methods for improved performance.
Changed data binding in `CreateProjectPage.xaml` and `OpenProjectPage.xaml` to use new data models.
Changed `App.xaml.cs` to utilize the new `ActivationHandler` and include additional services.

Removed `IActivationHandler` interface and integrated its functionality into `ActivationHandler`.
Removed `EditorActivationHandler` as its functionality was merged into `ActivationHandler`.

Updated `AssemblyInfo.cs` to include global using directives for entity types.
Updated image assets to reflect visual resource changes.

Ghost.Editor/View/Pages/Landing/CreateProjectPage.xaml

@@ -4,10 +4,10 @@
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:data="using:Ghost.Data.Models"
     xmlns:editor="using:Ghost.Editor.Controls"
     xmlns:local="using:Ghost.Editor.View.Pages.Landing"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-    xmlns:warper="using:Ghost.Editor.Models.Warpers"
     mc:Ignorable="d">
 
     <Grid>
@@ -34,7 +34,7 @@
                 ItemsSource="{x:Bind ViewModel.templates}"
                 SelectedItem="{x:Bind ViewModel.SelectedTemplate, Mode=TwoWay}">
                 <ListView.ItemTemplate>
-                    <DataTemplate x:DataType="warper:TemplateInfoWarper">
+                    <DataTemplate x:DataType="data:TemplateData">
                         <Grid>
                             <Grid.ColumnDefinitions>
                                 <ColumnDefinition Width="Auto" />
@@ -46,7 +46,7 @@
                                 Width="24"
                                 Height="24">
                                 <ImageIcon.Source>
-                                    <BitmapImage UriSource="{x:Bind GetIconURI()}" />
+                                    <BitmapImage UriSource="{x:Bind GetIconURI(), Mode=OneWay}" />
                                 </ImageIcon.Source>
                             </ImageIcon>
                             <TextBlock
@@ -66,7 +66,7 @@
             Margin="16,0,0,0"
             Padding="16"
             Background="{ThemeResource CardBackgroundFillColorDefaultBrush}"
-            CornerRadius="8">
+            CornerRadius="{StaticResource OverlayCornerRadius}">
             <Grid.RowDefinitions>
                 <RowDefinition Height="300" />
                 <RowDefinition Height="*" />
@@ -76,13 +76,19 @@
             <Grid Grid.Row="0" CornerRadius="4">
                 <Image VerticalAlignment="Center" Stretch="UniformToFill">
                     <Image.Source>
-                        <BitmapImage UriSource="{x:Bind ViewModel.SelectedTemplate.GetPreviewURI()}" />
+                        <BitmapImage UriSource="{x:Bind ViewModel.SelectedTemplate.GetPreviewURI(), Mode=OneWay}" />
                     </Image.Source>
                 </Image>
                 <Grid
                     HorizontalAlignment="Stretch"
                     VerticalAlignment="Stretch"
-                    Background="{ThemeResource CircleElevationBorderBrush}" />
+                    Background="{ThemeResource CircleElevationBorderBrush}">
+                    <TextBlock
+                        Margin="16"
+                        VerticalAlignment="Bottom"
+                        Foreground="{ThemeResource TextOnAccentFillColorSecondaryBrush}"
+                        Text="{x:Bind ViewModel.SelectedTemplate.Info.Description, Mode=OneWay}" />
+                </Grid>
             </Grid>
 
             <StackPanel Grid.Row="1" Margin="8,0">
@@ -106,7 +112,10 @@
                             <ColumnDefinition Width="Auto" />
                         </Grid.ColumnDefinitions>
 
-                        <TextBox Grid.Column="0" Text="{x:Bind ViewModel.ProjectLocation, Mode=TwoWay}" />
+                        <TextBox
+                            Grid.Column="0"
+                            IsReadOnly="True"
+                            Text="{x:Bind ViewModel.ProjectLocation, Mode=TwoWay}" />
                         <Button
                             Grid.Column="1"
                             Margin="4,0,0,0"
@@ -122,6 +131,7 @@
                 <Button
                     Width="150"
                     HorizontalAlignment="Right"
+                    Command="{x:Bind ViewModel.CreateProjectCommand}"
                     Content="Create"
                     Style="{ThemeResource AccentButtonStyle}" />
             </Grid>