Fix some imports in the moves package

Castle and EnPassant moved to the board package. Reference these types there.
Add the board packages as a dependency to the moves package.

moves/src/moves.rs

@@ -1,6 +1,7 @@
 // Eryn Wells <eryn@erynwells.me>
 
-use crate::{castle::Castle, defs::Kind};
+use crate::defs::Kind;
+use chessfriend_board::castle::Castle;
 use chessfriend_core::{Rank, Shape, Square};
 use std::fmt;