Add Startup Events to Database

Now emit startup events on conneciton
Some events still to add

ObservatoryFramework/Files/Journal/Other/Synthesis.cs

@@ -11,5 +11,5 @@ public class Synthesis : JournalBase
     public string Name { get; init; }
 
     [JsonConverter(typeof(MaterialConverter))]
-    public ImmutableList<Material> Materials { get; init; }
+    public IReadOnlyCollection<Material> Materials { get; init; }
 }