Use Serbian flag for neutral cultures (sr, Sr-Cyrl, sr-Latn) (#740)

Author: rammba

src/ResXManager.Tests/View/Converters/CultureToImageSourceConverterTests.cs

@@ -55,6 +55,9 @@ public async Task Should_Produce_Correct_Default_Image_For_Every_Culture()
         [InlineData("sv", "se.gif")]
         [InlineData("ca-ES", "es.gif")]
         [InlineData("ca-ES-valencia", "es.gif")]
+        [InlineData("sr", "rs.gif")]
+        [InlineData("sr-Cyrl", "rs.gif")]
+        [InlineData("sr-Latn", "rs.gif")]
         public void Should_Use_Region_As_Primary_Source_For_Flags(string culture, string expectedImageName)
         {
             var imageName = GetImageFileName(CultureInfo.GetCultureInfo(culture));
@@ -89,4 +92,4 @@ public void Should_Produce_Overriden_Culture_Image_If_Overriden_With_Settings(st
             return fileName;
         }
     }
-}
+}

src/ResXManager.View/Converters/CultureToImageSourceConverter.cs

@@ -110,4 +110,4 @@ public object ConvertBack(object? value, Type? targetType, object? parameter, Cu
     {
         throw new NotImplementedException();
     }
-}
+}

src/ResXManager.View/Tools/CultureCountryOverrides.cs

@@ -15,7 +15,7 @@
 [Export]
 public class CultureCountryOverrides
 {
-    private const string DefaultOverrides = "en=en-US,zh=zh-CN,zh-CHT=zh-CN,zh-HANT=zh-CN,fy=fy,ko=ko-KR,";
+    private const string DefaultOverrides = "en=en-US,zh=zh-CN,zh-CHT=zh-CN,zh-HANT=zh-CN,fy=fy,ko=ko-KR,sr=rs,sr-Cyrl=rs,sr-Latn=rs,";
 
     private static readonly IEqualityComparer<KeyValuePair<CultureInfo, CultureInfo>> _comparer = new DelegateEqualityComparer<KeyValuePair<CultureInfo, CultureInfo>>(item => item.Key);
     private static readonly IEnumerable<KeyValuePair<CultureInfo, CultureInfo>> _defaultOverrides = ReadSettings(DefaultOverrides);