Azure-functions-worker

In this release:

1. Remove worker from azure namespace
2. E2E testing starter code

In this release:

1. Point fix to allow `azure` namespace resolution for user code
2. Separation of unit and E2E tests

In this release:

1. Support for generic bindings
2. Generic table binding support
3. Marshall import exceptions for better readability

In this release:

1. Allow raw body bytes to be sent to the worker from the Functions Host.
2. Clear environment for placeholder startup
3. Revert worker.py compatibility fix
4. Remove grpc tools from worker run environment

In this release:

1. Adding support for reloading environment variables
2. Remove obsolete disabled property

In this release:

1. Support for adding out-of-tree bindings