Created Platformer example game

Assets/Games/Platformer/PlatformerCameraMovement.cs

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+using System.Collections.Generic;
+using UnityEngine;
+
+public class PlatformerCameraMovement : MonoBehaviour
+{
+    public List<GameObject> players;
+
+    private Vector3 start;
+    private Vector3 target;
+    public float weight;
+    public float speed;
+
+    private void Start()
+    {
+        start = transform.position;
+    }
+
+    private void Update()
+    {
+        Vector3 playerAverage = Vector3.zero;
+        foreach (GameObject player in players)
+        {
+            playerAverage += player.transform.position;
+        }
+        playerAverage /= players.Count;
+
+        target = start * weight + playerAverage * (1 - weight);
+        transform.position = Vector3.Lerp(transform.position, target, speed * Time.deltaTime);
+        transform.position = new Vector3(transform.position.x, transform.position.y, -10);
+    }
+}