* **circleci:** Add support for CircleCi ([1718](https://github.com/projen/projen/issues/1718)) ([4e2d3ed](https://github.com/projen/projen/commit/4e2d3ed8051f793e76880f764ba7c021f6b61c0b)), closes [#1717](https://github.com/projen/projen/issues/1717)