Parent muzzle flashes to the shooter (#1935)

I didn't do hitscan because it would look weird af unless someone has a better idea.

Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>

Content.Server/GameObjects/Components/Weapon/Ranged/Ammunition/AmmoComponent.cs

@@ -128,7 +128,7 @@ namespace Content.Server.GameObjects.Components.Weapon.Ranged.Ammunition
             return entity;
         }
 
-        public void MuzzleFlash(GridCoordinates grid, Angle angle)
+        public void MuzzleFlash(IEntity entity, Angle angle)
         {
             if (_muzzleFlashSprite == null)
             {
@@ -145,7 +145,8 @@ namespace Content.Server.GameObjects.Components.Weapon.Ranged.Ammunition
                 EffectSprite = _muzzleFlashSprite,
                 Born = time,
                 DeathTime = deathTime,
-                Coordinates = grid.Translated(offset),
+                AttachedEntityUid = entity.Uid,
+                AttachedOffset = offset,
                 //Rotated from east facing
                 Rotation = (float) angle.Theta,
                 Color = Vector4.Multiply(new Vector4(255, 255, 255, 255), 1.0f),

Content.Server/GameObjects/Components/Weapon/Ranged/Barrels/ServerRangedBarrelComponent.cs

@@ -260,7 +260,7 @@ namespace Content.Server.GameObjects.Components.Weapon.Ranged.Barrels
 
                 if (CanMuzzleFlash)
                 {
-                    ammoComponent.MuzzleFlash(Owner.Transform.GridPosition, angle);
+                    ammoComponent.MuzzleFlash(Owner, angle);
                 }
 
                 if (ammoComponent.Caseless)