THERE NEVER WAS ANY CO-ORDINATION in the various political moves, initiated in the wake of the Israeli invasion of Lebanon, to structure a lasting Middle East peace. There is an American 'initiative' from President Reagan, an Arab peace plan agreed at the Fez summit, the late Mr. Brezhnev's scheme and a joint Egyptian-French design; all propounded as the solution for an overall Middle East peace settlement. Although these proposals express an ultimate common aim, they differ substantially as to the means by which it is to be reached and, even, as to its final political shape.