Add ne operator

[stever178]

pytest output:

=============================== test session starts ================================
platform linux -- Python 3.12.5, pytest-8.3.5, pluggy-1.5.0
rootdir: /home/lsj/projects/ntops
configfile: pyproject.toml
plugins: cov-6.1.1
collected 102 items

tests/test_abs.py ........                                                   [  7%]
tests/test_add.py ........                                                   [ 15%]
tests/test_addmm.py ..                                                       [ 17%]
tests/test_bmm.py ..                                                         [ 19%]
tests/test_cos.py ........                                                   [ 27%]
tests/test_div.py ........                                                   [ 35%]
tests/test_exp.py ........                                                   [ 43%]
tests/test_gelu.py ........                                                  [ 50%]
tests/test_mm.py ..                                                          [ 52%]
tests/test_mul.py ........                                                   [ 60%]
tests/test_ne.py ........                                                    [ 68%]
tests/test_relu.py ........                                                  [ 76%]
tests/test_rsqrt.py ........                                                 [ 84%]
tests/test_sigmoid.py ........                                               [ 92%]
tests/test_sin.py ........                                                   [100%]

========================= 102 passed in 102.59s (0:01:42) ==========================