[configuration] organize prequeue and operation queue proto data

[luxe]

This organizes the config files by composing some of the data. The prequeue and operation queue are configured by name and max_depth. The existing configuration values are moved into a prequeue and operationQueue config inside the backplane config.

[80degreeswest]

I started the work to converting the configs to yaml. I'm hesitant to do any config changes at this point since most of this will become irrelevant in the not so distant future, especially since it's a breaking change.

[luxe]

Let me know if there is a branch we can watch. Some progress on storage workers requires changes to the proto data as well.
Also not sure if you are going from yaml -> proto. Or its a java/spring thing instead