Editor Client: new properties

[kevin-legion]

• Display array of sub properties (Editor client: Use new proto services #800)
• Hierarchical groups (with a ptype == "_group_") (Editor client: Use new proto services #800)
• usize (mesh id)
• u8 (Editor client: Use new proto services #800)
• Fix color that gets updated on resource select (possibly change the underlying value on the server side too?) Editor client: Manually dispatch change event in Color Property property (#690) #783
• Use new proto definitions (Editor client: Use new proto services #800)
• Optional primitive property (Editor client: Add Optional (primitive) property support #845)
• Add into / delete from vec of sub properties (Editor client: Add/remove vector sub properties (UI only) #854 (UI only) and Editor client: Save vector add/remove property changes #858)
• Fix vector index 0 delete and name change (Editor client: Property grid - Support any name in vectors #885)
• Handle hidden properties (Editor client hidden properties #896)
• Ref to resources
• ID
• Enum
• Components

Not necessary now:

• Vec of components (?)
• Optional component
• Ref modal (can wait)

Notes regarding the property vectors, they can contain:

• Fixed properties (all properties are vec3, or int, or any primitive or sub structure)
• Heterogeneous list (always components) with dynamic "type"