Adds 'no cover' pragmas to exlcude certain code blocks from coverage
information. Have excluded log setup code, and the main commandline
entrypoint as neither of these are usefully testable.

Adds an example FaaS module, along with some example tests and some
project configuration files to run the example application and run the
unit tests.

Adds python library which wraps and builds upon the google
functions-framework library to provide a basic FaaS support library,
including additional extensions like structlog configuration.

Adds a Dockerfile which can be used to run FaaS applications.