PreparedLayoutTextView

Summary:
This forms the basis for a replacement of `TextView`.

This started off with Litho's [`RCTextView`](https://github.com/facebook/litho/blob/master/litho-rendercore-text/src/main/java/com/facebook/rendercore/text/RCTextView.java), which is a simple view, for rendering a text layout, and providing some built-in keyboard navigation and a11y support. Many changes were made to it, including:

1. Removing many parts not relevant to RN, or which will be replaced by other RN infra. E.g. we will reuse existing a11y delegates, have existing ways of creating Spannables and text layouts, inline views, etc
2. Converting to Kotlin
3. Adding back in some changes required for RN's drawing, and expected view manager APIs (e.g. overflow/clipping customization)
4. Making it target a ViewGroup instead of a View, for correct inline view support down the line

Because we rely on drawing text layout, with the same Spannable as before, most things "just work", because they are part of the layout we are drawing, generated by TextLayoutManager on the Fabric side. We don't offer much customization to what can be drawn, forcing it to have happened in the layout we are showing already.

There are quite a few bits not implemented yet. Some of these are cases, like `textAlignVertical`, were previously incorrectly implemented just at the ReactTextView layer, so Fabric layout was unaware of them. Another similar class to this is any non-default fonts which we must load. `adjustsFontSizeToFit` (stubbed out in later diff) will also need some tweaking with the new assumption we don’t want to mutate Spans/layouts set in State.

Fine grained selection support is the largest tbd.

Changelog: [Internal]

Differential Revision: D73282649

Reviewed By: Abbondanzo

Author: NickGerleman