Core - Moved PluginApi version to the csproj

src/Artemis.Core/JsonConverters/ForgivingVersionConverter.cs

@@ -0,0 +1,26 @@
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using System;
+
+namespace Artemis.Core.JsonConverters
+{
+    /// <summary>
+    /// Version converter that is forgiving of missing parts of the version string,
+    /// setting them to zero instead of -1.
+    /// </summary>
+    internal class ForgivingVersionConverter : VersionConverter
+    {
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            object obj = base.ReadJson(reader, objectType, existingValue, serializer);
+            if (obj is not Version v)
+                return obj;
+
+            int major = v.Major == -1 ? 0 : v.Major;
+            int minor = v.Minor == -1 ? 0 : v.Minor;
+            int build = v.Build == -1 ? 0 : v.Build;
+            int revision = v.Revision == -1 ? 0 : v.Revision;
+            return new Version(major, minor, build, revision);
+        }
+    }
+}