remove unused stuff. add player energy

api/models.py

@@ -1,6 +1,16 @@
+from django.conf import settings
 from django.db import models
 
 
 class Building(models.Model):
     geojson_id = models.IntegerField()
     health = models.FloatField()
+
+
+class PlayerInfo(models.Model):
+    user = models.OneToOneField(
+        settings.AUTH_USER_MODEL,
+        on_delete=models.CASCADE,
+        related_name="player_info",
+    )
+    energy = models.PositiveIntegerField()