Pass all args to pytest.main to propagate user options like -k (#1640)

Pass all args to pytest.main to propage user options like -k

Tested locally with `python test/test_ops.py -k test_dequantize_tensor_core_tiled_layout_correctness_quant_dequant`

which previously just ran all the tests but after this PR will run 60, the same number as `pytest test/test_ops.py -k test_dequantize_tensor_core_tiled_layout_correctness_quant_dequant`

test/test_ops.py

@@ -1,4 +1,5 @@
 import itertools
+import sys
 
 import pytest
 import torch
@@ -614,4 +615,4 @@ def test_marlin_qqq(batch_size, k_chunk, n_chunk, num_bits, group_size, mnk_fact
 
 
 if __name__ == "__main__":
-    pytest.main([__file__])
+    pytest.main(sys.argv)