Renaming a folder should rename the corresponding namespace

[drewnoakes]

Given a structure like:

MyProject
   MyComponent
      MyClass.cs

Where MyClass.cs has content:

namepsace MyProject.MyComponent;

class MyClass {}

Renaming the MyComponent folder in Visual Studio's Solution Explorer should rename the MyComponent namespace.

[drewnoakes]

Today we explicitly exclude folder renames here:

project-system/src/Microsoft.VisualStudio.ProjectSystem.Managed.VS/ProjectSystem/VS/Rename/RenamerProjectTreeActionHandler.cs

Lines 87 to 95 in 8f52554

	if (project is null ||
	await IsAutomationFunctionAsync() ||
	node.IsFolder ||
	_vsOnlineServices.ConnectedToVSOnline ||
	FileChangedExtension(oldFilePath, newFileWithExtension))
	{
	// Do not display rename Prompt
	return;
	}