Add marker component on entities spawned via replication

[cBournhonesque]

Currently Replicated is added on both the sender and receiver.
It would be useful to be able to distinguish between the two.

In lightyear I have Replicate on the send-side and Replicated on the receive side.

[Shatur]

An option to consider: insert additional component together with Replicated for entities received on the client.
We can call it Remote (to avoid a single letter difference).

So Replicated will be on both and Remote will be only the client.
This simplifies logic, such as state serialization. This way users can have shared logic for both client and server logic with Replicated (such as serialization logic), but can have special behavior for the client if needed (like a callback for something that was replicated).