* Move command/config + command/token to api/cliconfig + api/tokenhelper
* Remove unused functions and unused import
* Simplify and inline function copied from SDK
* Delete unused duplicated/forwarding config implementation from command package
* Delete unused code, unexport API surface that's only used internally to the package
* Fix up license headers
* Add changelog
* Tweak .gitignore to track hcl files in testdata/ folders
