Return correct type (interfacve) for array (#53)

tests/ProxyInterfaceSourceGeneratorTests/Source/Bar.cs

@@ -0,0 +1,5 @@
+namespace ProxyInterfaceSourceGeneratorTests.Source;
+
+public class Bar
+{
+}

tests/ProxyInterfaceSourceGeneratorTests/Source/Foo.cs

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+namespace ProxyInterfaceSourceGeneratorTests.Source;
+
+public class Foo
+{
+    //public Bar DoSomethingAndGetABar()
+    //{
+    //    return new Bar();
+    //}
+
+    //public Bar[] DoSomethingAndGetAnArrayOfBars()
+    //{
+    //    return new[] { new Bar() };
+    //}
+
+    //public Foo DoSomethingAndGetAFoo()
+    //{
+    //    return new Foo();
+    //}
+
+    public Foo[] Foos { get; set; }
+
+    public Foo[] DoSomethingAndGetAnArrayOfFoos()
+    {
+        return new[] { new Foo() };
+    }
+
+    //public List<Foo> DoSomethingAndGetAListOfFoos()
+    //{
+    //    return new[] { new Foo() }.ToList();
+    //}
+}

tests/ProxyInterfaceSourceGeneratorTests/Source/IFoo.cs

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+namespace ProxyInterfaceSourceGeneratorTests.Source
+{
+    public partial interface IFoo
+    {
+    }
+}