Explore ctypes for python bindings

[cissieAB]

https://docs.python.org/3/library/ctypes.html#passing-pointers-or-passing-parameters-by-reference

Yatish mentioned current Python binding
Reassembler.getEvent/recvEvent(recv_buf: List) -> Tuple[int, int, int, int]

for Reassembler::getEvent and Reassembler::recvEvent is not natural, especially using Python List as the data buffer and then decode List[0] only.

I used Python List because at that moment, List is the only native Python object I could think of which is mutable and match the underlying C++ ** interface.

He recommended to look into Python ctypes package that we could pass variables by reference in Python. It can also reduce the data copies between Python and C++. That's definitely worth looking into.