widget/menu: add member 'type_name' to CMenuItem class

This makes it easier to distinguish the object type. Normally,
type queries would be done using typeid-operation or dynamic_cast,
but we usually have RTTI disabled in the Makefiles. Presumably,
this is to avoid unnecessarily increasing the size of the binaries.
The type information defined by this member is currently only defined
in the CMenuItem class, so all subclasses are also equipped with it.
An exception is the CMenuSeparator class. If further definitions are
necessary in the subclasses, they can be retrofitted as needed.

src/gui/widget/menue.cpp

@@ -68,6 +68,7 @@ CMenuItem::CMenuItem(bool Active, neutrino_msg_t DirectKey, const char * const I
 	active		= current_active = Active;
 	directKey	= DirectKey;
 	isStatic	= IsStatic;
+	type_name	= "CMenuItem";
 
 	if (IconName && *IconName)
 		iconName = IconName;
@@ -2512,6 +2513,7 @@ void CMenuSeparator::init(const int& Type, const neutrino_locale_t& lText, const
 	type		= Type;
 	name		= lText;
 	nameString	= sText;
+	type_name	= "CMenuSeparator";
 }
 
 int CMenuSeparator::getHeight(void)

src/gui/widget/menue.h

@@ -134,6 +134,7 @@ class CMenuItem : public  CComponentsSignals
 		void handleOptionIcon(const std::string& str_option);
 		const char* getValName(const neutrino_locale_t& Option, const char* ValName);
 	public:
+		std::string	type_name;
 		int		height;
 		bool		active, current_active;
 		bool		marked;