Add support to generate code for interface without a namespace (#46)

tests/ProxyInterfaceSourceGeneratorTests/Destination/INoNamespace.g.cs

@@ -0,0 +1,27 @@
+//----------------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by https://github.com/StefH/ProxyInterfaceSourceGenerator.
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//----------------------------------------------------------------------------------------
+
+#nullable enable
+using System;
+
+
+    public partial interface INoNamespace
+    {
+        ProxyInterfaceSourceGeneratorTests.Source.NoNamespace _Instance { get; }
+
+        bool Test { get; set; }
+
+
+
+
+
+
+    }
+
+#nullable disable

tests/ProxyInterfaceSourceGeneratorTests/Destination/NoNamespaceProxy.g.cs

@@ -0,0 +1,36 @@
+//----------------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by https://github.com/StefH/ProxyInterfaceSourceGenerator.
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//----------------------------------------------------------------------------------------
+
+#nullable enable
+using System;
+
+
+    public partial class NoNamespaceProxy : INoNamespace
+    {
+        public ProxyInterfaceSourceGeneratorTests.Source.NoNamespace _Instance { get; }
+        
+
+        public bool Test { get => _Instance.Test; set => _Instance.Test = value; }
+
+
+
+
+
+
+
+        public NoNamespaceProxy(ProxyInterfaceSourceGeneratorTests.Source.NoNamespace instance)
+        {
+            _Instance = instance;
+            
+
+
+        }
+    }
+
+#nullable disable