Investigate/complete bash migration path

[slominskir]

Our production deployment currently relies on the scripts here:

https://github.com/JeffersonLab/smoothness/tree/main/bash/keycloak

The functions in these scripts have been migrated to the lib.sh file in this project.

We will ultimately remove the smoothness/tree/main/bash/keycloak scripts. However, we may need to ensure the migration is clean. It may require keeping the same script file names and updating them to use lib.sh via source/import. Need to experiment with source lib.sh and then calling functions to determine best user experience for a bash API.

[slominskir]

The best solution is likely just adding the ability to pass a function name as an argument. Then the lib.sh could be both importable (source command) and executable so users can use it however is easiest.