clean up imports and reorganize the ssd bits into a graphics mod

src/tasks/mod.rs

@@ -9,7 +9,7 @@ pub mod simulation;
 #[cfg(feature="demo")]
 pub mod demo;
 #[cfg(feature="oled")]
-pub mod oled;
+pub mod oled_render;
 
 // Prediction engines
 pub mod predict;
@@ -18,4 +18,5 @@ pub mod motion;
 // Graphics stack
 pub mod ui;
 pub mod safetyui;
-pub mod render;
+pub mod render;
+pub mod oled;