Optimized memory usage

[ideeockus]

• Removed collecting files content in memory

• Read files content by chunks

• Removed redundant conversions e.g. struct.unpack('{}s'.format(self.cbLength), file.read(self.cbLength)) -> file.read(self.cbLength)

• Added the cli argument --optimize to enable optimized memory mode: no json conversion, no bytes.hex() logging etc

It may be useful when handle large files.

comparison

original:

optimized:

[DissectMalware]

Thank you for your contribution and my apologies for the late response. Will try to review this soon