Add `gds#find`

Based on feedback from @maxdemarzi, introduce a `gds#find` method that replaces `gds#findNodesByLabelAndProperty` and `ggo#getAllNodesWithLabel`.
>>keep a rather precise method name like we have now
Absolutely NOT.  Take a look at getRelationships, it has like a million signatures, it works great. 
I do not want the first thing a new developer trying neo has to do is type the monstrocity that is  "findNodesByLabelAndProperty".