refactor app/object store

[krisnova]

with merging #67 we introduce some new paradigms

• You can pass nil as a kube client to Install(client) and Uninstall(client)
• There is a new interface method Objects() []runtime.Object

We should make our code a little cleaner, and have the object cache match what has been installed and uninstalled
We should make the object cache a hash map such that we can reference specific elements in the map as we install and uninstall them
We can pull the code generation out a little bit and tidy things up