Smart autocomplete on labels, relationship types, and properties

[nicolewhite]

Autocomplete can be smarter. On startup, in the background, query the graph for all the combinations of (:Label)-[:RELATIONSHIP]-(:Label) in the graph. Essentially the "what is related and how" query.

When recommending relationship names, only recommend relationships that are possibly attached to the node label to the left, if present. When recommending node labels, only recommend node labels attached to the relationship name to the left, if present. When recommending property keys, only recommend keys that are on the node label that the identifier was created with.

Whether or not cycli retrieves this data in the background should probably be an option, such as cycli -m or cycli --smart for smart autocomplete.