Allow conditional inclusion of the AddServices extension methods

Author: kzu

src/DependencyInjection/AddServicesNoReflectionExtension.cs

@@ -1,4 +1,6 @@
-using System;
+// <auto-generated />
+#if DDI_ADDSERVICES
+using System;
 using System.ComponentModel;
 using Microsoft.Extensions.DependencyInjection;
 
@@ -122,4 +124,5 @@ public static IServiceCollection AddServices(this IServiceCollection services)
         [AttributeUsage(AttributeTargets.Method)]
         class DDIAddServicesAttribute : Attribute { }
     }
-}
+}
+#endif

src/DependencyInjection/Devlooped.Extensions.DependencyInjection.props

@@ -3,6 +3,7 @@
   <PropertyGroup>
     <DevloopedExtensionsDependencyInjectionVersion>42.42.42</DevloopedExtensionsDependencyInjectionVersion>
     <AddServiceAttribute Condition="'$(AddServiceAttribute)' == ''">true</AddServiceAttribute>
+    <AddServicesExtension Condition="'$(AddServicesExtension)' == ''">true</AddServicesExtension>
   </PropertyGroup>
 
   <ItemGroup>

src/DependencyInjection/Devlooped.Extensions.DependencyInjection.targets

@@ -4,11 +4,13 @@
     <!-- Backwards compatiblity -->
     <AddServiceAttribute Condition="'$(IncludeServiceAttribute)' != ''">$(IncludeServiceAttribute)</AddServiceAttribute>
     <DefineConstants Condition="'$(Language)' == 'C#' and '$(AddServiceAttribute)' == 'true'">$(DefineConstants);DDI_ADDSERVICE</DefineConstants>
+    <DefineConstants Condition="'$(Language)' == 'C#' and '$(AddServicesExtension)' == 'true'">$(DefineConstants);DDI_ADDSERVICES</DefineConstants>
   </PropertyGroup>
 
   <Target Name="_AddDDI_Constant" BeforeTargets="CoreCompile">
     <PropertyGroup>
       <DefineConstants Condition="'$(Language)' == 'C#' and '$(AddServiceAttribute)' == 'true' and !$(DefineConstants.Contains('DDI_ADDSERVICE'))">$(DefineConstants);DDI_ADDSERVICE</DefineConstants>
+      <DefineConstants Condition="'$(Language)' == 'C#' and '$(AddServicesExtension)' == 'true' and !$(DefineConstants.Contains('DDI_ADDSERVICES'))">$(DefineConstants);DDI_ADDSERVICES</DefineConstants>
     </PropertyGroup>
   </Target>