Added schema by default and reference it from the appsettings files.

+ Do not suggest null values instead of objects

src/JsonSchema/Program.cs

@@ -44,7 +44,8 @@ namespace JsonSchema
                 SchemaType = SchemaType.JsonSchema,
                 AlwaysAllowAdditionalObjectProperties = true,
                 SerializerSettings = new JsonSerializerSettings(),
-                TypeNameGenerator = new UmbracoPrefixedTypeNameGenerator()
+                TypeNameGenerator = new UmbracoPrefixedTypeNameGenerator(),
+                DefaultReferenceTypeNullHandling = ReferenceTypeNullHandling.NotNull
             };
             settings.SerializerSettings.Converters.Add(new StringEnumConverter());
 

src/Umbraco.Web.UI.NetCore/appsettings.Development.json

@@ -1,4 +1,5 @@
 {
+    "$schema" : "./umbraco/config/appsettings-schema.json",
     "Serilog": {
         "MinimumLevel": {
             "Default": "Information"

src/Umbraco.Web.UI.NetCore/appsettings.json

@@ -1,4 +1,5 @@
 {
+  "$schema" : "./umbraco/config/appsettings-schema.json",
   "ConnectionStrings": {
     "umbracoDbDSN": ""
   },
@@ -71,4 +72,4 @@
       }
     }
   }
-}
+}