feat(snake): implement snake game with pure game logic, renderer, and IPC-based main loop

crates/apps/snake/src/lib.rs

@@ -0,0 +1,8 @@
+#![no_std]
+
+pub mod game;
+pub mod renderer;
+
+#[cfg(test)]
+#[path = "tests/mod.rs"]
+mod tests;