Correctness check for single op

[ZhennanQin]

• Cover opset in oneDNN graph.
• Use numpy or pytorch as reference.
• Implement similar data filing as oneDNN.
• Set same numerical tolerance as oneDNN.

[WangJialei-A]

@ZhennanQin
This issue depends on python binding. Please help add #57 into the llama2 milestone too.

[lmontigny]

no for CI. capture more bugs from this issue