fork from 1.3

FreeSR.Shared/Command/Convert/CommandParameterConverterAttribute.cs

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+namespace FreeSR.Shared.Command.Convert
+{
+    [AttributeUsage(AttributeTargets.Class)]
+    public class CommandParameterConverterAttribute : Attribute
+    {
+        public Type Type { get; }
+
+        public CommandParameterConverterAttribute(Type type)
+        {
+            Type = type;
+        }
+    }
+}

FreeSR.Shared/Command/Convert/ICommandParameterConverter.cs

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+namespace FreeSR.Shared.Command.Convert
+{
+    public interface ICommandParameterConverter
+    {
+        bool TryConvert(string parameter, out object result);
+    }
+}

FreeSR.Shared/Command/Convert/StringCommandParameterConverter.cs

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+namespace FreeSR.Shared.Command.Convert
+{
+    [CommandParameterConverter(typeof(string))]
+    public class StringCommandParameterConverter : ICommandParameterConverter
+    {
+        public bool TryConvert(string parameter, out object result)
+        {
+            result = parameter;
+            return true;
+        }
+    }
+}

FreeSR.Shared/Command/Convert/UIntCommandParameterConverter.cs

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+namespace FreeSR.Shared.Command.Convert
+{
+    [CommandParameterConverter(typeof(uint))]
+    public class UIntCommandParameterConverter : ICommandParameterConverter
+    {
+        public bool TryConvert(string parameter, out object result)
+        {
+            result = null;
+            if (!uint.TryParse(parameter, out uint parseResult))
+                return false;
+
+            result = parseResult;
+            return true;
+        }
+    }
+}