AVRO-3803: Python patched up ipc issues

[asosnovsky]

AVRO-3803

What is the purpose of the change

• Patched issue where FramedReader resulted in an infinite loop where it cannot read anything from the response (it was comparing bytes to a string)
• Patched error handling for the Responder:
  • Invalid error source: except was pointing at schema.AvroException instead of avro.errors.AvroException
  • "Handshake" was lost for cases where the response could not be read due to things like "type errors"
• Added some types to responder class

Verifying this change

This change added tests and can be verified as follows:

• New test cases added
• Type checker for Responder works (while we have tested it in our repo, I am honestly a bit confused on how to setup the local server with this code base)

Documentation

• Does this pull request introduce a new feature? NO

[kojiromike]

I think this is good, but can we attach it to any existing tickets? If not, I can open a new one.

[asosnovsky]

@kojiromike no I don't have a JIRA for this. Please open one :) thank you!

[kojiromike]

@asosnovsky could I trouble you to check if this implementation resolves AVRO-1639?

[kojiromike]

As far as resolving the conflicts: If you take your branch as-is and run autoflake on it, that should be sufficient.