Added NoTrail, Slowmotion and BulletFreezeRemove Pickups

Also refactored Extinguisher to remove particles from the end (still wonky though)

Assets/Scripts/Game/Pickups/Slowmotion.cs

@@ -0,0 +1,32 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class Slowmotion : Pickup
+{
+    public float slowFactor = 0.5f;
+    public float slowDuration = 5f;
+    private bool isSlow = false;
+
+    public override void OnPickup()
+    {
+        Debug.Log("Slowmotion");
+        isSlow = true;
+        Time.timeScale = Time.timeScale * slowFactor;
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        if (isSlow)
+        {
+            slowDuration -= Time.deltaTime * (1 / slowFactor);
+            if (slowDuration <= 0)
+            {
+                Time.timeScale =  Time.timeScale * (1 / slowFactor);
+                Destroy(gameObject);
+
+            }
+        }
+    }
+}