First attempt to add NPCs

src/direction.rs

@@ -0,0 +1,11 @@
+#[derive(Clone, Debug)]
+pub struct Direction {
+    pub x: isize,
+    pub y: isize
+}
+
+impl Direction {
+    pub fn new(x: isize, y: isize) -> Self {
+        Self { x, y }
+    }
+}