Add swift-bylaws 0.2.0

[theblixguy]

This PR adds Bylaws 0.2.0, an architectural linter for Swift.

[google-cla]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.

[bazel-io]

Hello BCR maintainers, modules without existing maintainers (bylaws) have been updated in this PR.
Please review the changes. You can view a diff against the previous version in the "Generate module diff" check.

[bazel-io]

Hello BCR maintainers, modules without existing maintainers (swift-bylaws) have been updated in this PR.
Please review the changes. You can view a diff against the previous version in the "Generate module diff" check.