Fix ctype conversions

[cromachina]

Fixes allowing you to read 32 bit floats from the target process. Only 64 bit floats were being converted before.
This should fix #6 and #8

Fixes bytes being properly converted from the ctype buffer. Before, attempting to get bytes from data.value would truncate the data like a null terminated string. According to the python docs, you should call bytes(data) to retrieve the entire buffer as bytes, examples here: https://docs.python.org/3/library/ctypes.html#ctypes.create_string_buffer
I think this fixes #7, #9, and #11

[cromachina]

There might be more to this I think, the search functions may also need to be fixed.

[cromachina]

Okay tested a few more times to find specific byte strings in a process and it seems fine.

[JeanExtreme002]

Hi @cromachina! Sorry for the delay in getting back to you.

Thanks a lot for your contribution to the PR — really appreciate your help and your patience!