Blindness refactor (#15705)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/Eye/Blinding/Components/BlurryVisionComponent.cs

@@ -0,0 +1,21 @@
+using Content.Shared.Eye.Blinding.Systems;
+using Robust.Shared.GameStates;
+
+namespace Content.Shared.Eye.Blinding.Components;
+
+/// <summary>
+///     This component adds a white overlay to the viewport. It does not actually cause blurring.
+/// </summary>
+[RegisterComponent]
+[NetworkedComponent, AutoGenerateComponentState]
+[Access(typeof(BlurryVisionSystem))]
+public sealed partial class BlurryVisionComponent : Component
+{
+    /// <summary>
+    ///     Amount of "blurring". Also modifies examine ranges.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadWrite), DataField("magnitude"), AutoNetworkedField]
+    public float Magnitude;
+
+    public const float MaxMagnitude = 10;
+}