C#: Add source generator for method list

modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators.Sample/Methods.cs

@@ -0,0 +1,31 @@
+using System.Diagnostics.CodeAnalysis;
+
+namespace Godot.SourceGenerators.Sample;
+
+[SuppressMessage("ReSharper", "RedundantNameQualifier")]
+public partial class Methods : Godot.Object
+{
+    private void MethodWithOverload()
+    {
+    }
+
+    private void MethodWithOverload(int a)
+    {
+    }
+
+    private void MethodWithOverload(int a, int b)
+    {
+    }
+
+    // Should be ignored. The previous one is picked.
+    // ReSharper disable once UnusedMember.Local
+    private void MethodWithOverload(float a, float b)
+    {
+    }
+
+    // Generic methods should be ignored.
+    // ReSharper disable once UnusedMember.Local
+    private void GenericMethod<T>(T t)
+    {
+    }
+}