Add schema identifiers (`$id`) to all defined types in the `sys` repository

[aschaeffer]

Goal

Add schema identifiers ($id) to all defined types in the sys repository.

Tasks

• Add schema identifier https://schema.reactive-graph.io/schema/json/component.schema.json to the components
• Add schema identifier https://schema.reactive-graph.io/schema/json/entity-type.schema.json to the entity types
• Add schema identifier https://schema.reactive-graph.io/schema/json/relation-type.schema.json to the relation types
• Add schema identifier https://schema.reactive-graph.io/schema/json/flow-type.schema.json to the flow types
• Add schema identifier https://schema.reactive-graph.io/schema/json/entity-instance.schema.json to the entity instances
• Add schema identifier https://schema.reactive-graph.io/schema/json/relation-instance.schema.json to the relation instances
• Add schema identifier https://schema.reactive-graph.io/schema/json/flow-instance.schema.json to the flow instances

Example

Old

{
  "namespace": "logical",
  "type_name": "and"
}

New

{
  "$id": "https://schema.reactive-graph.io/schema/json/entity-type.schema.json",
  "namespace": "logical",
  "type_name": "and"
}