Implement a whole new move crate

moves/src/defs.rs

@@ -0,0 +1,34 @@
+// Eryn Wells <eryn@erynwells.me>
+
+use chessfriend_core::Shape;
+
+pub(crate) enum Kind {
+    Quiet = 0b00,
+    DoublePush = 0b01,
+    KingSideCastle = 0b10,
+    QueenSideCastle = 0b11,
+    Capture = 0b0100,
+    EnPassantCapture = 0b0101,
+    Promotion = 0b1000,
+    CapturePromotion = 0b1100,
+}
+
+#[repr(u16)]
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+pub enum PromotionShape {
+    Knight = 0b00,
+    Bishop = 0b01,
+    Rook = 0b10,
+    Queen = 0b11,
+}
+
+impl From<PromotionShape> for Shape {
+    fn from(value: PromotionShape) -> Self {
+        match value {
+            PromotionShape::Knight => Shape::Knight,
+            PromotionShape::Bishop => Shape::Bishop,
+            PromotionShape::Rook => Shape::Rook,
+            PromotionShape::Queen => Shape::Queen,
+        }
+    }
+}