* Add cache resource decoding helpers
* Implement a common package for workload selection facilities. This includes:
* Controller cache Index
* ACL hooks
* Dependency Mapper to go from workload to list of resources which select it
* Dependency Mapper to go from a resource which selects workloads to all the workloads it selects.
* Update the endpoints controller to use the cache instead of custom mappers.
Co-authored-by: R.B. Boyer <4903+rboyer@users.noreply.github.com>