Respect $XDG_CONFIG_HOME and add --config overwrite for config path #265
Description
Is your feature request related to a problem? Please describe.
Currently config file location is enforced to UserHomeDir()/.config/temporalio/tctl.yml and doesn't allow to have a different location
Describe the solution you'd like
Respect XDG_CONFIG_HOME env variable
Allow users to overwrite with --config flag
Additional context
current config file location:
cat ~/.config/temporalio/tctl.yaml
the actual config file location code lives here https://github.com/temporalio/tctl-kit