Implemented deplomyent pipeline in python ...

new file:   deployment/__init__.py
	new file:   deployment/__main__.py
	new file:   deployment/core/__init__.py
	new file:   deployment/core/bootstrap.py
	new file:   deployment/core/suite.py
	new file:   deployment/core/task_runner.py
	new file:   deployment/core/tasks.py
	new file:   deployment/core/tests.py
	new file:   deployment/lib/__init__.py
	new file:   deployment/lib/errors.py
	new file:   deployment/lib/printer.py
	new file:   deployment/lib/task_types.py
	new file:   deployment/lib/types.py
	new file:   deployment/main.py
	new file:   deployment/prototype.py
	modified:   shell.nix