move backend to subfolder

TanksServer/GameLogic/SpawnPowerUp.cs

@@ -1,21 +0,0 @@
-namespace TanksServer.GameLogic;
-
-internal sealed class SpawnPowerUp(
-    IOptions<GameRules> options,
-    MapEntityManager entityManager
-) : ITickStep
-{
-    private readonly double _spawnChance = options.Value.PowerUpSpawnChance;
-    private readonly int _maxCount = options.Value.MaxPowerUpCount;
-
-    public Task TickAsync(TimeSpan delta)
-    {
-        if (entityManager.PowerUps.Count() >= _maxCount)
-            return Task.CompletedTask;
-        if (Random.Shared.NextDouble() > _spawnChance * delta.TotalSeconds)
-            return Task.CompletedTask;
-
-        entityManager.SpawnPowerUp();
-        return Task.CompletedTask;
-    }
-}