Graph Properties and Bindings

[Kleptine]

Feature:

• Right-click any input port and select 'Make Property'. That port gets a 'nub' filling it in.
• Property ports are exposed on the Lattice Executor Authoring component. (In a list)

This would let you write a Lattice Graph, but configure certain inputs per instance. Ie. A purchasable door, but with a different cost in each instance.

This feature is also a blocker to several others (3 for 1 deal!):

• Nested Graphs (properties get exposed inline in a nested graph node inspector) Allow Nesting LatticeGraphs as Sub-Graphs #44
• Per-instance Scene pickers (ie. getting rid of the text input on ChildEntityReference)