Add aten::_foreach unary ops

[yucai-intel]

_foreach_ops list: erf, erfc, expm1, lgamma, trunc, floor, ceil, acos, asin, atan, cosh, sinh, tanh, cos, sin, tan, exp, log, log1p, log2, log10, sqrt, sigmoid, round, frac, reciprocal, sign, neg, abs, zero.

[xytintel]

Pls add test cases