Move to test bundle Shape equality

Sources/geometrize/Shapes/Shape.swift

@@ -23,10 +23,3 @@ extension Shape {
     }
 
 }
-
-func == (lhs: any Shape, rhs: any Shape) -> Bool {
-    switch (lhs, rhs) {
-    case (let lhs as Rectangle, let rhs as Rectangle): return lhs == rhs
-    default: return false
-    }
-}

Sources/geometrize/State.swift

@@ -41,11 +41,3 @@ struct State {
     }
 
 }
-
-extension State: Equatable {
-
-    static func == (lhs: State, rhs: State) -> Bool {
-        lhs.score == rhs.score && lhs.alpha == rhs.alpha && lhs.shape == rhs.shape
-    }
-
-}

Tests/geometrizeTests/CoreTests.swift

@@ -169,3 +169,16 @@ final class CoreTests: XCTestCase {
     }
 
 }
+
+func == (lhs: any Shape, rhs: any Shape) -> Bool {
+    switch (lhs, rhs) {
+    case (let lhs as Circle, let rhs as Circle): return lhs == rhs
+    case (let lhs as Ellipse, let rhs as Ellipse): return lhs == rhs
+    case (let lhs as Line, let rhs as Line): return lhs == rhs
+    case (let lhs as Polyline, let rhs as Polyline): return lhs == rhs
+    case (let lhs as QuadraticBezier, let rhs as QuadraticBezier): return lhs == rhs
+    case (let lhs as Rectangle, let rhs as Rectangle): return lhs == rhs
+    case (let lhs as RotatedRectangle, let rhs as RotatedRectangle): return lhs == rhs
+    default: return false
+    }
+}