implemented ShiinaRio resources.

WARC archives;
S25 images;
OGV sound files.

ArcFormats/WidgetWARC.xaml

@@ -0,0 +1,12 @@
+<Grid x:Class="GameRes.Formats.GUI.WidgetWARC"
+      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+      xmlns:fmt="clr-namespace:GameRes.Formats.ShiinaRio"
+      xmlns:p="clr-namespace:GameRes.Formats.Properties"
+      MaxWidth="250">
+    <ComboBox Name="Scheme" ItemsSource="{Binding Source={x:Static fmt:Decoder.KnownSchemes}, Mode=OneWay}"
+              SelectedValue="{Binding Source={x:Static p:Settings.Default}, Path=WARCScheme, Mode=TwoWay}"
+              SelectedValuePath="Name"
+              DisplayMemberPath="Name"
+              Width="180"/>
+</Grid>