* Add App Toolkit 0.2.0 package

- Use kpack-dependencies 0.0.9
- Use cartographer-catalog 0.3.0
- Bump to cartographer 0.3.0
- Add developer-namespace feature and requirement on secretgen-controller
- Switch App Toolkit Testing framework from go to bash
- Update Readme

* Correct linting errors

* Remove unneccessary kpack_dependencies configs and doc updates

* Fix kpack-dependencies docs link