Added cube movement

3D/Movement/Basic Cube/CubeMovement.c#

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+using UnityEngine;
+
+public class CubeMovement : MonoBehaviour
+{
+    public float movementSpeed = 5f;
+
+    void Update()
+    {
+        // Get input from keyboard or arrow keys
+        float horizontalInput = Input.GetAxis("Horizontal");
+        float verticalInput = Input.GetAxis("Vertical");
+
+        // Calculate the movement direction
+        Vector3 movementDirection = new Vector3(horizontalInput, 0f, verticalInput).normalized;
+
+        // Move the cube based on the input and movement speed
+        transform.Translate(movementDirection * movementSpeed * Time.deltaTime);
+    }
+}

3D/Movement/Basic Cube/instructions.md

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+To use this script, follow these steps:
+
+In Unity, create a 3D cube GameObject by going to GameObject -> 3D Object -> Cube.
+
+Attach the script to the cube GameObject by dragging and dropping the script onto the cube in the Hierarchy or using the `Add Component