Add ability for +VVEDIT users to scale damage/healing in the game (#35255)

* Initial commit

* Add universal modifier for all damage/heals, make guidebooks work.

* help text

Content.Shared/Chemistry/SharedChemistryGuideDataSystem.cs

@@ -14,6 +14,9 @@ public abstract class SharedChemistryGuideDataSystem : EntitySystem
     protected readonly Dictionary<string, ReagentGuideEntry> Registry = new();
 
     public IReadOnlyDictionary<string, ReagentGuideEntry> ReagentGuideRegistry => Registry;
+
+    // Only ran on the server
+    public abstract void ReloadAllReagentPrototypes();
 }
 
 [Serializable, NetSerializable]