5.
已知两定点\(F_{1}({-}\sqrt{2}{,}0){,}F_{2}(\sqrt{2}{,}0)\),满足条件\({|}PF_{1}{|-|}PF_{2}{|=}2\)的点\(P\)的轨迹是曲线\(E\),直线\(y{=}{kx}{-}1\)与\(E\)曲线交于\(A{,}B\)两点.
\((1)\)求点\(P\)的轨迹曲线的方程;
\((2)\)求\(k\)的取值范围;
\((3)\)如果\({|}{AB}{|=}6\sqrt{3}\),且曲线\(E\)上存在点\(C\),使\(\overrightarrow{{OA}}{+}\overrightarrow{{OB}}{=}m\overrightarrow{{OC}}\),求\(m\)的值和的\({\triangle }{ABC}\)面积\(S\).