Move text into reference folder (#433)

This was imported in #241

See also [#masonry > text vs
text2](https://xi.zulipchat.com/#narrow/stream/317477-masonry/topic/text.20vs.20text2)

We do want to sort out text properly, see #337, so I'm keeping the
reference code around.

masonry/src/contexts.rs

@@ -14,7 +14,7 @@ use crate::action::Action;
 use crate::dpi::LogicalPosition;
 use crate::promise::PromiseToken;
 use crate::render_root::{RenderRootSignal, RenderRootState};
-use crate::text2::TextBrush;
+use crate::text::TextBrush;
 use crate::text_helpers::{ImeChangeSignal, TextFieldRegistration};
 use crate::tree_arena::TreeArenaTokenMut;
 use crate::widget::{CursorChange, WidgetMut, WidgetState};

masonry/src/lib.rs

@@ -115,7 +115,7 @@ pub mod app_driver;
 pub mod debug_logger;
 pub mod debug_values;
 pub mod event_loop_runner;
-pub mod text2;
+pub mod text;
 mod tracing_backend;
 mod tree_arena;
 

masonry/src/render_root.rs

@@ -21,7 +21,7 @@ use crate::debug_logger::DebugLogger;
 use crate::dpi::{LogicalPosition, LogicalSize, PhysicalSize};
 use crate::event::{PointerEvent, TextEvent, WindowEvent};
 use crate::kurbo::Point;
-use crate::text2::TextBrush;
+use crate::text::TextBrush;
 use crate::tree_arena::TreeArena;
 use crate::widget::{WidgetMut, WidgetRef, WidgetState};
 use crate::{