move ported cpp_shared resources

src/common/cpp_essentials/direction.rs

@@ -0,0 +1,14 @@
+#[derive(PartialEq, Eq, Clone, Copy, Debug)]
+pub enum Direction {
+    Left = -1,
+    Right = 1,
+}
+
+impl From<Direction> for i32 {
+    fn from(value: Direction) -> Self {
+        match value {
+            Direction::Left => -1,
+            Direction::Right => 1,
+        }
+    }
+}