Reaction & reagent effect logging (#5463)

* Reaction logging

* effect logging

* position

Content.Shared/Administration/Logs/LogImpact.cs

@@ -1,6 +1,10 @@
-namespace Content.Shared.Administration.Logs;
+using System;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Administration.Logs;
 
 // DO NOT CHANGE THE NUMERIC VALUES OF THESE
+[Serializable, NetSerializable]
 public enum LogImpact : sbyte
 {
     Low = -1,

Content.Shared/Administration/Logs/LogType.cs

@@ -14,4 +14,6 @@ public enum LogType
     EventStopped = 7,
     ShuttleCalled = 8,
     ShuttleRecalled = 9,
+    ChemicalReaction = 17,
+    ReagentEffect = 18,
 }