Merge remote-tracking branch 'origin/v10/dev' into v10/feature/nullable-reference-types-in-Umbraco.Web.Backoffice

# Conflicts:
#	src/Umbraco.Core/DependencyInjection/UmbracoBuilder.Collections.cs
#	src/Umbraco.Core/Extensions/PublishedContentExtensions.cs
#	src/Umbraco.Core/Telemetry/Models/TelemetryReportData.cs
#	src/Umbraco.Infrastructure/PropertyEditors/ValueConverters/MultiUrlPickerValueConverter.cs
#	src/Umbraco.PublishedCache.NuCache/ContentStore.cs
#	src/Umbraco.Web.BackOffice/Trees/MemberTypeTreeController.cs
#	src/Umbraco.Web.Common/ModelsBuilder/InMemoryModelFactory.cs
#	src/Umbraco.Web.Common/Security/MemberManager.cs
#	src/Umbraco.Web.Website/Routing/ControllerActionSearcher.cs
#	src/Umbraco.Web.Website/Routing/IControllerActionSearcher.cs
#	src/Umbraco.Web.Website/Routing/UmbracoRouteValueTransformer.cs

src/Umbraco.Core/Models/TelemetryLevel.cs

@@ -0,0 +1,12 @@
+using System.Runtime.Serialization;
+
+namespace Umbraco.Cms.Core.Models
+{
+    [DataContract]
+    public enum TelemetryLevel
+    {
+        Minimal,
+        Basic,
+        Detailed,
+    }
+}

src/Umbraco.Core/Models/TelemetryResource.cs

@@ -0,0 +1,11 @@
+using System.Runtime.Serialization;
+
+namespace Umbraco.Cms.Core.Models
+{
+    [DataContract]
+    public class TelemetryResource
+    {
+        [DataMember]
+        public TelemetryLevel TelemetryLevel { get; set; }
+    }
+}

src/Umbraco.Core/Models/UsageInformation.cs

@@ -0,0 +1,20 @@
+using System.Runtime.Serialization;
+
+namespace Umbraco.Cms.Core.Models
+{
+    [DataContract]
+    public class UsageInformation
+    {
+        [DataMember(Name = "name")]
+        public string Name { get; }
+
+        [DataMember(Name = "data")]
+        public object Data { get; }
+
+        public UsageInformation(string name, object data)
+        {
+            Name = name;
+            Data = data;
+        }
+    }
+}

src/Umbraco.Core/Models/UserTwoFactorProviderModel.cs

@@ -0,0 +1,20 @@
+using System.Runtime.Serialization;
+
+namespace Umbraco.Cms.Core.Models
+{
+    [DataContract]
+    public class UserTwoFactorProviderModel
+    {
+        public UserTwoFactorProviderModel(string providerName, bool isEnabledOnUser)
+        {
+            ProviderName = providerName;
+            IsEnabledOnUser = isEnabledOnUser;
+        }
+
+        [DataMember(Name = "providerName")]
+        public string ProviderName { get; }
+
+        [DataMember(Name = "isEnabledOnUser")]
+        public bool IsEnabledOnUser { get; }
+    }
+}