style: fix coder warnings

fix (wsconnectors): fix warning from graphql connector and add better guzzle exception handling because it sometimes still throws exceptions after you've asked it not to

Cache debugging

feat (wscall): add call debugging information and refactored wscall flow to better produce debug output

change(cache-tags): Add the cache tags from the wsfields so that when…

change(cache-tags): Add the cache tags from the wsfields so that when a entity is updated it invalidates its associated services also.

Philippe T. Simard authored Jul 05, 2019 and David Pascoe-Deslauriers committed Jul 05, 2019

Issue #3064912 by ptsimard: $options passed to WSCall->call() get overridden by default WSCall->getOptions()

Rules hasn't really materialized as a stable thing yet, removing stubs

We're removing the stub and the TODO for the REST connector as it is unlikely to be implemented.
This is because it is likely no long will use it, as REST services aren't really a defined protocol, so you have setup something custom anyway, so we're going to focus on making that easy to do.