dillon1000/react

Add Text node types

These nodes rendering into Text nodes in the DOM.

There is a special case when a string is a direct child of a host
node. In that case, we won't reconcile it as a child fiber. In
terms of fibers, it is terminal. However, the host config special
cases it.

It is kind of unfortunate that we have to special case this kind
of child in the HostConfig. It would be nice to unify this with
other types of child instances. Text nodes have some weird special
cases, but those special cases tend to *vary* by environment.
They're not the same special cases so not sure how valuable it is
to have a special protocol and special types for it.