Add `CoreService` ability to return all features

sources/CoreService.uc

@@ -43,6 +43,7 @@ struct FeatureConfigPair
     var public Text             configName;
 };
 var private array<FeatureConfigPair>    automaticConfigs;
+var private array< class<Feature> >     availableFeatures;
 
 var private LoggerAPI.Definition infoLoadingPackage;
 var private LoggerAPI.Definition infoBootingUp, infoBootingUpFinished;
@@ -180,6 +181,8 @@ private final function LoadManifest(class<_manifest> manifestClass)
         nextPair.configName     = manifestClass.default.features[i].static
             .GetAutoEnabledConfig();
         automaticConfigs[automaticConfigs.length]   = nextPair;
+        availableFeatures[availableFeatures.length] =
+            manifestClass.default.features[i];
     }
     for (i = 0; i < manifestClass.default.testCases.length; i += 1)
     {
@@ -202,6 +205,11 @@ public final function array<FeatureConfigPair> GetAutoConfigurationInfo()
     return result;
 }
 
+public final function array< class<Feature> > GetAvailableFeatures()
+{
+    return availableFeatures;
+}
+
 private final function class<_manifest> LoadManifestClass(string packageName)
 {
     return class<_manifest>(DynamicLoadObject(  packageName $ manifestSuffix,