Enhaned proto and test client

Core updates:

• Enhanced proto file with Nonce generation api in AnnonCreds service

Test enhancements :

• Added issuer test workflow
• Added pool client example

Improved error handling and containerization

• gRPC client examples to get started
• Dockerfile for quickly setting up miu

Thanks to new contributors :
@vladyslavmunin
@OBrezhniev

enhanced error handling

Merge pull request #21 from bootstrapsp/develop

Develop

Bug fixes and proto file simplification

With this major release we're changing the proto structure by combining all messages and services in a single file. This is to keep it simple for everyone. (esp. if new to gRPC) and get rid for strange import issues.

Also rolling out some bug fixes and logging for the pyserver.

alpha release to community

v1.0

Initial commit to open community - va1.0