Refactor project structure to use submodules

src/board/game.rs

@@ -0,0 +1,31 @@
+use crate::board::fen::from_fen;
+use String as FenError;
+
+use super::board::Board;
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct Game {
+    pub board: Board,
+}
+
+impl Game {
+    pub const fn new() -> Self {
+        Self {
+            board: Board::new(),
+        }
+    }
+
+    pub fn new_from_fen(fen: &str) -> Result<Self, FenError> {
+        from_fen(fen)
+    }
+
+    pub const fn run(&self) {
+        Board::new();
+    }
+}
+
+impl Default for Game {
+    fn default() -> Self {
+        Self::new()
+    }
+}