Add alias for highlight

Use awsctxrc file, and msg classes (#1)

* Add bashmenu.sh as a submodule and integrate it into awsctx

* Adding changes to use XDG_CONFIG_HOME rc file

* Cleanup colors

* msg functions

* Update profile format

* Add region colors

* Fix profile change bug

* Update kubeconfig gen

* shfmt

* alias in usage function

* cleanup

* update -k

* Check bash version

* Handle missing KUBE_HOME