Get rid of the OverlayEffectsComponent stuff (#3010)

* Get rid of the OverlayEffectsComponent stuff because it just ended up creating workarounds for it's bugs, without removing any functionality

* Flashes and Flashbangs use the same code now (the Flashable path because it's better)

Content.Shared/GameObjects/Components/Mobs/SharedOverlayEffectsComponent.cs

@@ -1,120 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using JetBrains.Annotations;
-using Robust.Shared.GameObjects;
-using Robust.Shared.Interfaces.Timing;
-using Robust.Shared.IoC;
-using Robust.Shared.Serialization;
-using Robust.Shared.ViewVariables;
-
-namespace Content.Shared.GameObjects.Components.Mobs
-{
-    /// <summary>
-    /// Full screen overlays; Blindness, death, flash, alcohol etc.
-    /// </summary>
-    public abstract class SharedOverlayEffectsComponent : Component
-    {
-        public override string Name => "OverlayEffectsUI";
-
-        public sealed override uint? NetID => ContentNetIDs.OVERLAYEFFECTS;
-    }
-
-    [Serializable, NetSerializable]
-    public class OverlayContainer : IEquatable<string>, IEquatable<OverlayContainer>
-    {
-        [ViewVariables(VVAccess.ReadOnly)]
-        public string ID { get; }
-
-        [ViewVariables(VVAccess.ReadWrite)]
-        public List<OverlayParameter> Parameters { get; } = new();
-
-        public OverlayContainer([NotNull] string id)
-        {
-            ID = id;
-        }
-
-        public OverlayContainer(SharedOverlayID id) : this(id.ToString())
-        {
-        }
-
-        public OverlayContainer(SharedOverlayID id, params OverlayParameter[] parameters) : this(id)
-        {
-            Parameters.AddRange(parameters);
-        }
-
-        public bool TryGetOverlayParameter<T>(out T parameter) where T : OverlayParameter
-        {
-            var found = Parameters.FirstOrDefault(p => p is T);
-            if (found != null)
-            {
-                parameter = found as T;
-                return true;
-            }
-
-            parameter = default;
-            return false;
-        }
-
-        public bool Equals(string other)
-        {
-            return ID == other;
-        }
-
-        public bool Equals(OverlayContainer other)
-        {
-            return ID == other?.ID;
-        }
-
-        public override int GetHashCode()
-        {
-            return ID != null ? ID.GetHashCode() : 0;
-        }
-
-    }
-
-    [Serializable, NetSerializable]
-    public class OverlayEffectComponentMessage : ComponentMessage
-    {
-        public List<OverlayContainer> Overlays;
-
-        public OverlayEffectComponentMessage(List<OverlayContainer> overlays)
-        {
-            Directed = true;
-            Overlays = overlays;
-        }
-    }
-
-    [Serializable, NetSerializable]
-    public class ResendOverlaysMessage : ComponentMessage
-    {
-    }
-
-    [Serializable, NetSerializable]
-    public abstract class OverlayParameter
-    {
-    }
-
-    [Serializable, NetSerializable]
-    public class TimedOverlayParameter : OverlayParameter
-    {
-        [ViewVariables(VVAccess.ReadOnly)]
-        public int Length { get; set; }
-
-        public double StartedAt { get; private set; }
-
-        public TimedOverlayParameter(int length)
-        {
-            Length = length;
-            StartedAt = IoCManager.Resolve<IGameTiming>().CurTime.TotalMilliseconds;
-        }
-    }
-
-    public enum SharedOverlayID
-    {
-        GradientCircleMaskOverlay,
-        CircleMaskOverlay,
-        FlashOverlay,
-        RadiationPulseOverlay,
-    }
-}