* Loads cache from context for PointerDB access
* WIP adds overlay lookups to pointerdb requests
* Pointer lookup code is added for Get
* adds feature flag for pointerdb return
* refactors pointerdb code
* removes some unnecessary debug logs
* Fixes indent in config
* adds early return for non-remote pointers
* formats code, removes some comments
* Fixes tests broken by pointer proto changes
* adds error check and merges variable declaration
* removes commented out proto import
* adds error check to pdbclient
* pointerdb: separate client and server packages
the reason for this is so that things the server needs (bolt, auth)
don't get imported if all you need is the client. will result in
smaller binaries and less flag definitions
* review comments
