Create an entity to publish without requiring the hypergraph provider

Often we just want to create an entity then publish it without integrating with the reactivity of the hypergraph store. Currently when using the hooks we require writing to a private space with a hypergraph space provider.

We could have something like

export class Todo extends Entity.Class<Todo>("Todo")({
   name: Type.String,
   description: Type.String,
})

const newTodo = Todo.create({ name: "X", description: "Y" })
await publishToPublicSpace({ entity: newTodo, spaceId: "Z" })

// Alternatively something like this
await publishToPublicSpace(Todo, { entity: { name: "X", description: "Y" }, spaceId: "Z" })

该 issue 提到了 Entity.Class、Todo.create、hooks、hypergraph space provider，以及提议的 publishToPublicSpace 入口点。首先跟踪当前基于 provider 的实体创建和发布流程。当达成一致的 API 支持创建和发布实体而无需 hypergraph provider，并且测试覆盖提议的用法时，即视为完成。