By Aziz El Yaakoubi RIYADH (Reuters) -The Saudi-based Gulf Cooperation Council (GCC) is considering inviting the Houthi movement and other Yemeni parties for consultations in Riyadh this month as part of an initiative aimed at backing U.N.-led peace efforts, two Gulf officials told Reuters. Formal invitations would be sent within days for the talks on military, political and economic aspects of the war between the Iran-aligned Houthis and a coalition led by Saudi Arabia, said the officials, who declined to be named ahead of an official announcement this week. The conflict enters its eighth yea…