* updates api client vars to snake_case for custom messages
* updates api client vars to snake_case for tools
* updates api client vars to snake_case for sync
* updates api client vars to snake_case for secrets engine
* updates api client vars to snake_case for auth
* updates api client vars to snake_case for usage
* updates api client dep to point to gh repo
* fixes custom-messages service unit tests
* fixes configure-ssh test
* fixes configure-ssh test...again
* adds error parsing method to api service
* replaces apiErrorMessage util instances with api service parseError
* removes apiErrorMessage util and tests
* removes ApiError type
* fixes issue in isLocalStorageSupported error handling