Resolving issue: "Armor isn't predicted space-wizards#15273"

Armor mitigation should be properly when attacking self. Changes made via moving ArmorComponent.cs to a new folder in Shared and adding a new file called ArmorDamageSystem in that same folder.

Content.Shared/Armor/ArmorComponent.cs

@@ -7,7 +7,5 @@ public sealed class ArmorComponent : Component
     {
         [DataField("modifiers", required: true)]
         public DamageModifierSet Modifiers = default!;
-
     }
-
 }