Add Metalstorm-style cursor aim

Virtual stick cursor steered through the gun reticle, server-side virtual pilot
using measured control responses, client cursor/camera handling with look-ahead,
free look and scroll zoom.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YVREx3uo7nz1FEhzveWTUh

src/main/java/dev/lumareth/improvedAerodynamics/client/aim/AimSeat.java

@@ -0,0 +1,15 @@
+package dev.lumareth.improvedAerodynamics.client.aim;
+
+import net.mcreator.valkyrienwarium.entity.SeatEntityEntity;
+import net.minecraft.world.entity.Entity;
+
+/** Everything that touches Warium VS classes, so nothing else loads them when Warium is missing. */
+final class AimSeat {
+    private AimSeat() {
+    }
+
+    static Entity seatOf(Entity rider) {
+        Entity root = rider.getRootVehicle();
+        return root instanceof SeatEntityEntity ? root : null;
+    }
+}