Convert ModuleRestockLookAtConstrain into ModuleRestockConstraints

New module is extendable and modular, allowing constraints to be run in the expected order without relying on possibly undefined behavior

Source/Restock/Constraints/CopyPositionConstraint.cs

@@ -0,0 +1,40 @@
+using UnityEngine;
+
+namespace Restock.Constraints
+{
+    [System.Serializable]
+    public class CopyPositionConstraint : IConstraint
+    {
+        private readonly string moversName;
+        private readonly string targetName;
+        
+        private readonly bool local = false;
+
+        // Cached components
+        private readonly Transform mover;
+        private readonly Transform target;
+        
+        public CopyPositionConstraint(ConfigNode node, Part p)
+        {
+            node.TryGetValue("rotatorsName", ref moversName);
+            node.TryGetValue("targetName", ref targetName);
+            
+            mover = p.FindModelTransform(moversName);
+            target = p.FindModelTransform(targetName);
+        }
+        
+        public void Update()
+        {
+            if (mover == null || target == null) return;
+
+            if (local)
+            {
+                mover.localPosition = target.localPosition;
+            }
+            else
+            {
+                mover.position = target.position;
+            }
+        }
+    }
+}