#1037 Improve architecture of registration methods (#236)

* #1037 Improve architecture of registration methods
- Introduce parameters classes for each registration method
- RegistrationMethod has constants with the required parameters class -> no longer need to have a RegistrationExecutorProvider class that needs to be injected everywhere, let AsyncRegister be the only one to worry about which class will perform the registration
- Fix inheritance of password registration types - previously two-factor auth registration inherited from password registration directly

* Create matcher which checks for equality via reflections
- Allow to perform equality check on objects with default equals() method

src/test/java/fr/xephi/authme/AuthMeInitializationTest.java

@@ -9,6 +9,7 @@ import fr.xephi.authme.command.CommandHandler;
 import fr.xephi.authme.datasource.DataSource;
 import fr.xephi.authme.initialization.DataFolder;
 import fr.xephi.authme.initialization.factory.FactoryDependencyHandler;
+import fr.xephi.authme.initialization.factory.SingletonStoreDependencyHandler;
 import fr.xephi.authme.listener.BlockListener;
 import fr.xephi.authme.permission.PermissionsManager;
 import fr.xephi.authme.process.Management;
@@ -93,7 +94,7 @@ public class AuthMeInitializationTest {
             new Settings(dataFolder, mock(PropertyResource.class), null, buildConfigurationData());
 
         Injector injector = new InjectorBuilder()
-            .addHandlers(new FactoryDependencyHandler())
+            .addHandlers(new FactoryDependencyHandler(), new SingletonStoreDependencyHandler())
             .addDefaultHandlers("fr.xephi.authme")
             .create();
         injector.provide(DataFolder.class, dataFolder);