new gui module text box implementation

starting to work on the new UI library, got labels and text boxes working as well as containers for widgets.

planning a big refactor

src/user/bin/tetris.rs

@@ -8,7 +8,7 @@ use crate::{serial_print, serial_println};
 use crate::std::application::{Application, Error};
 use crate::std::io::Screen;
 use crate::user::lib::coords::{Direction, Position, PositionReal};
-use crate::user::lib::libgui::libgui_core::Pos;
+use crate::user::lib::libgui_old_archive::libgui_core::Pos;
 
 
 pub(crate) struct TetrisEngine {