added comments and organized project files

Assets/Scripts/Game/PlayerJoinCard.cs

@@ -0,0 +1,14 @@
+using TMPro;
+using UnityEngine;
+
+public class PlayerJoinCard : MonoBehaviour
+{
+    public GameObject playerPreview;
+    public int playerNumber;
+    public TextMeshProUGUI playerNumberText;
+
+    void Start() // Sets player number
+    {
+        playerNumberText.text = playerNumber.ToString();
+    }
+}