Add Makefile, setup.py, Pipfile, and configuration files

[paoptu023]

Description of changes:

• Add necessary files based on common Python project structure.
  • .pylintrc - Pylint configuration file.
  • MANIFEST.in - defines the list of files to include in the distribution.
  • Makefile - defines convenient commands for development.
  • Pipfile - declares abstract dependencies, used by Pipenv.
  • Pipfile.lock - declares dependencies with pinned versions for environment reproducibility.
  • serverlessrepo/__version__.py - defines package version and meta-data.
  • setup.cfg - Setup configuration file.
  • setup.py - Setup script to describe module distribution.
  • tox.ini - Tox configuration file to run tests against multiple Python versions.
• You can skip .pylintrc and Pipfile.lock as they are auto generated. The only customizations in .pylintrc are:
  • Changed the max-line-length to 120.
  • Disabled linter for useless-object-inheritance, unused-argument, too-many-instance-attributes.
• Tested packaging and publishing the module to TestPyPI, and I could successfully install it through pip.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[brettstack]

Not sure if we want to use this email.

[paoptu023]

Do we have an official email to use for interacting with external customers?

[keetonian]

SAM does, but I think this is the first pypi project for SAR, which means this is likely the first time we've needed something like this.

[paoptu023]

I put a placeholder as the team email, we can change it later on.

[keetonian]

Approving provided a better email alias is used for SAR open source projects.