Added a CLI, kvetchctl, to interact with the Kvetch API (#8)
* (+semver: feature) Added ketchctl CLI
- Build and documentation still in progress
* (+semver: feature) Refactored to use viper for flags/env variable input
* (+semver: feature) Update build scripts
* (+semver: feature) Added documentation for kvetchctl
* (+semver: patch) Update for image build optimization
* (+semver: fix) Fixed version flag config to use viper
* (+semver: patch) Update Makefile to remove temporary containers
* (+semver: feature) Add DX docs
* (+semver: patch) Added link to build status
