CI/CD update, community updates, other tweaks

[jhkennedy]

In particular:

• CODEOWNERS will automatically request the specified team for review :tada: https://docs.github.com/en/github/creating-cloning-and-archiving-repositories/creating-a-repository-on-github/about-code-owners
• conda-env.yml -> environment.yml for uniformity and ability to integrate with MyBinder.org
• Leverages Actions instead of writing the shell commands
  • ASFHyP3/actions
  • Trufflehog Action
  • Bump Version
• Moves distribution to it's own workflow
• Drops s3pypi