Add `gds#find`

Based on feedback from @maxdemarzi, introduce a `gds#find` method that replaces `gds#findNodesByLabelAndProperty` and `ggo#getAllNodesWithLabel`.
I disagree Max. Finding relationships are useful for generating Adjacency Lists. See: https://github.com/kbastani/neo4j-mazerunner/blob/master/extension/src/main/java/translation/Writer.java#L68