add engine

player/mod.rs

@@ -0,0 +1,9 @@
+mod human;
+use crate::game::{Board, Move};
+
+pub use human::PlayerConsole;
+
+pub trait Player {
+    fn request_move(&self, b: &Board) -> Result<Move, Box<dyn std::error::Error>>;
+    fn name(&self) -> &str;
+}