al-Sulṭah al-Waṭanīyah al-Filasṭīnīyah, Wazārat al-Takhṭīṭ wa-al-Taʻāwun al-Duwalī, al-Idārah al-ʻAmmah li-Bināʾ al-Muʾassasāt wa-al-Tanmīyah al-Basharīyah