Support parameter "out" in the graph runtime debug

[tylovescodes]

https://github.com/dmlc/tvm/blob/1ad6a2af672dbb94861d00985f4b9f8280d04d6e/python/tvm/contrib/debugger/debug_runtime.py#L200

[tqchen]

This is something that we should fix to make the semantics consistent with the graph runtime. @cchung100m can you help a bit on this?

[cchung100m]

Hi @tqchen

Sorry for my late reply and I will get around to it ASAP.

[tqchen]

clsoe by #4598