Modern settings shell folder

Adds virtual shell folder that contains items representing modern settings parsed from
`%windir%\ImmersiveControlPanel\Settings\AllSystemSettings_{253E530E-387D-4BC2-959D-E6F86122E5F2}.xml`.

It can be accessed via `shell:::{82E749ED-B971-4550-BAF7-06AA2BF7E836}` (in explorer).

Item in folder will open given setting page in `Settings` application.

Src/StartMenu/StartMenuHelper/ModernSettingsContextMenu.h

@@ -0,0 +1,60 @@
+// Context menu handler for Open-Shell Modern Settings shell folder
+
+#pragma once
+#include "resource.h"
+#include "StartMenuHelper_i.h"
+#include <shlobj.h>
+
+// CModernSettingsContextMenu
+
+class ATL_NO_VTABLE CModernSettingsContextMenu :
+	public CComObjectRootEx<CComSingleThreadModel>,
+	public CComCoClass<CModernSettingsContextMenu, &CLSID_ModernSettingsContextMenu>,
+	public IContextMenu,
+	public IShellExtInit,
+	public IObjectWithSite
+{
+public:
+	CModernSettingsContextMenu()
+	{
+	}
+
+DECLARE_REGISTRY_RESOURCEID(IDR_MODERNSETTINGSCONTEXTMENU)
+
+DECLARE_NOT_AGGREGATABLE(CModernSettingsContextMenu)
+
+BEGIN_COM_MAP(CModernSettingsContextMenu)
+	COM_INTERFACE_ENTRY(IContextMenu)
+	COM_INTERFACE_ENTRY(IShellExtInit)
+	COM_INTERFACE_ENTRY(IObjectWithSite)
+END_COM_MAP()
+
+	DECLARE_PROTECT_FINAL_CONSTRUCT()
+
+	HRESULT FinalConstruct()
+	{
+		return S_OK;
+	}
+
+	void FinalRelease()
+	{
+	}
+
+	// IContextMenu
+	IFACEMETHODIMP QueryContextMenu(HMENU hmenu, UINT indexMenu, UINT idCmdFirst, UINT idCmdLast, UINT uFlags);
+	IFACEMETHODIMP InvokeCommand(LPCMINVOKECOMMANDINFO lpici);
+	IFACEMETHODIMP GetCommandString(UINT_PTR idCmd, UINT uType, UINT* pRes, LPSTR pszName, UINT cchMax);
+
+	// IShellExtInit
+	IFACEMETHODIMP Initialize(PCIDLIST_ABSOLUTE pidlFolder, IDataObject* pdtobj, HKEY hkeyProgID);
+
+	// IObjectWithSite
+	IFACEMETHODIMP SetSite(IUnknown* punkSite);
+	IFACEMETHODIMP GetSite(REFIID riid, void** ppvSite);
+
+private:
+	CComPtr<IDataObject> m_pdtobj;
+	CComPtr<IUnknown> m_punkSite;
+};
+
+OBJECT_ENTRY_AUTO(__uuidof(ModernSettingsContextMenu), CModernSettingsContextMenu)