Add a Doc.Hydrate helper, similar to Doc.ClientSide that also renders server-side content

[Jand42]

The Doc.ClientSide <@ MyClientSideDoc() @> function (alias client) serves to insert an empty placeholder in server-side rendering, to be filled in with client-generated content automatically.

However, for SEO and page load experience purposes, it's often nice to return some plain rendered content from the server, to be replaced with it's activated equivalent on the client.

New Doc.Hydrate helper would do this. Doc.Hydrate (MyClientOrServerSideDoc()) would auto-quote but also evaluate the argument, rendering it both on the server and then replacing it with the activated component on the client. You can use IsClient checks within your logic to make sure no JavaScript-only calls happen during the server-side execution.