Add JsonVersionConverter and tests

tests/Jellyfin.Common.Tests/Json/JsonVersionConverterTests.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Text.Json;
+using MediaBrowser.Common.Json.Converters;
+using Xunit;
+
+namespace Jellyfin.Common.Tests.Json
+{
+    public class JsonVersionConverterTests
+    {
+        private readonly JsonSerializerOptions _options;
+
+        public JsonVersionConverterTests()
+        {
+            _options = new JsonSerializerOptions();
+            _options.Converters.Add(new JsonVersionConverter());
+        }
+
+        [Fact]
+        public void Deserialize_Version_Success()
+        {
+            var input = "\"1.025.222\"";
+            var output = new Version(1, 25, 222);
+            var deserializedInput = JsonSerializer.Deserialize<Version>(input, _options);
+            Assert.Equal(output, deserializedInput);
+        }
+
+        [Fact]
+        public void Serialize_Version_Success()
+        {
+            var input = new Version(1, 09, 59);
+            var output = "\"1.9.59\"";
+            var serializedInput = JsonSerializer.Serialize(input, _options);
+            Assert.Equal(output, serializedInput);
+        }
+    }
+}