The clitools contains helpers for building TT CLI tools.
See the example in the Go docs.
Configuration and tokens will be saved in $XDG_CONFIG_HOME or the appropriate user configuration directory for your platform, for Linux this is "~/.config/[name of application]/". Configuration is stored in "config.json" and the access tokens in "tokens.json".
UserConfigDir() gives preference to XDG_CONFIG_HOME, letting users in any OS specify a linux-style user config location. If XDG_CONFIG_HOME is empty it behaves just like os.UserConfigDir().
LoadEnv() loads any ".env" (override by setting DOT_ENV) in the current path and "[user config dir]/[app]/config.env" if they exist. This will not override any variables that are set, and the .env file takes precedence over config.env.