feat(core): add Vector2 type for 2D vector representation

Introduced the Vector2 type in the swiperia-core package to define 2D vectors as tuples. This will facilitate handling coordinates and movements more effectively in the swipe detection logic.

packages/swiperia-core/src/lib/vector2/Vector2.type.ts

@@ -0,0 +1,4 @@
+/**
+ * Represents a 2D vector, defined as a tuple of two numbers.
+ */
+export type Vector2 = [number, number];

packages/swiperia-core/src/lib/vector2/index.ts

@@ -0,0 +1 @@
+export type { Vector2 } from './Vector2.type';