Entity tree view

[becomingbabyman]

• enter a d/entity lookup in an input
• if an entity is found return it as A V pairs in a table
• include reverse refs to the entity in the the A V pairs too
• make ref values into toggles that expand the entity or set of entities into a nested list like a file tree
  • expanding a cardinality one ref should show the whole entity
  • expanding a cardinality many ref should show a list of entities sorted by :db/id that can then be expanded as individual entities
• refactor the tree-table view into its own component