[Menu] Add item disabled option

[cavasinf]

Description

Add item disabled option

        $item1 = new MenuItemModel('item1', 'Item 1');
        $menu->addItem($item1);

        $item2 = new MenuItemModel('item2', 'Item 2');
        $item2->setDisabled(true);
        $menu->addItem($item2);

        $subMenu1 = new MenuItemModel('subMenu1', 'Sub menu 1');
        $subMenu1Item1 = new MenuItemModel('subMenu1Item1', 'Item 1.1');
        $subMenu1->addChild($subMenu1Item1);
        $subMenu1Item2 = new MenuItemModel('$subMenu1Item2', 'Item 1.2');
        $subMenu1Item2->setDisabled(true);
        $subMenu1->addChild($subMenu1Item2);
        $menu->addItem($subMenu1);

        $subMenu2 = new MenuItemModel('subMenu2', 'Sub menu 2');
        $subMenu2->setDisabled(true);
        $subMenu2Item1 = new MenuItemModel('subMenu1Item1', 'Item 2.1');
        $subMenu2->addChild($subMenu2Item1);
        $subMenu2Item2 = new MenuItemModel('$subMenu1Item2', 'Item 2.2');
        $subMenu2Item2->setDisabled(true);
        $subMenu2->addChild($subMenu2Item2);
        $menu->addItem($subMenu2);

Bundle:

Tabler:

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I updated the documentation (see here)
• I agree that this code will be published under the MIT license

[cavasinf]

@kevinpapst This can be added before the next milestone, why BC BREAK ?

Edit : Ahhh maybe due to the href that is dynamic now?

[kevinpapst]

This one changes an interface. Easy to fix, but still a BC break.