Extracts magic strings from Tag calls (#36305)

* Extracts magic strings from Tag calls

When #36281 gets merged, the `TagSystem` methods will all give warnings. Let's fix those warnings before they even happen!

* Adds missing libraries

* Remove not yet implemented TagSystem changes

* Fix tag spelling error

Genuinely surprised there was only 1!

* Styling and proper type changes

* Styling

Co-authored-by: Tayrtahn <tayrtahn@gmail.com>

---------

Co-authored-by: Tayrtahn <tayrtahn@gmail.com>

Content.Server/Electrocution/ElectrocutionSystem.cs

@@ -62,6 +62,8 @@ public sealed class ElectrocutionSystem : SharedElectrocutionSystem
     [ValidatePrototypeId<DamageTypePrototype>]
     private const string DamageType = "Shock";
 
+    private static readonly ProtoId<TagPrototype> WindowTag = "Window";
+
     // Multiply and shift the log scale for shock damage.
     private const float RecursiveDamageMultiplier = 0.75f;
     private const float RecursiveTimeMultiplier = 0.8f;
@@ -139,7 +141,7 @@ public sealed class ElectrocutionSystem : SharedElectrocutionSystem
             {
                 foreach (var entity in _entityLookup.GetLocalEntitiesIntersecting(tileRef.Value, flags: LookupFlags.StaticSundries))
                 {
-                    if (_tag.HasTag(entity, "Window"))
+                    if (_tag.HasTag(entity, WindowTag))
                         return false;
                 }
             }