emoved the transfer to the decoding function of the initial size of...

emoved the transfer to the decoding function of the initial size of PyBytesObject. Added one more parameter to the wrapper of the encoding/decoding function, a numeric parameter, it takes a value from 1 to 2, which correspond to DAP_ENC_DATA_TYPE_B64 and DAP_ENC_DATA_TYPE_B64_URLSAFE from the dap_enc_data_type enumeration. And corrected the errors, now neither after nor during the execution of the Python script exceptions occur