refactor: Move lib/types into lib/xmpp

lib/types/result.dart

@@ -1,9 +0,0 @@
-class Result<S, V> {
-  final S _state;
-  final V _value;
-
-  Result(S state, V value) : _state = state, _value = value;
-
-  S getState() => _state;
-  V getValue() => _value;
-}

lib/xmpp/sasl/authenticator.dart

@@ -1,5 +1,5 @@
 import "package:moxxyv2/xmpp/stringxml.dart";
-import "package:moxxyv2/types/result.dart";
+import "package:moxxyv2/xmpp/types/result.dart";
 
 enum AuthenticationResult {
   success,

lib/xmpp/sasl/plain.dart

@@ -1,6 +1,6 @@
 import "dart:convert";
 
-import "package:moxxyv2/types/result.dart";
+import "package:moxxyv2/xmpp/types/result.dart";
 import "package:moxxyv2/xmpp/stringxml.dart";
 import "package:moxxyv2/xmpp/sasl/authenticator.dart";
 import "package:moxxyv2/xmpp/sasl/errors.dart";

lib/xmpp/sasl/scram.dart

@@ -1,7 +1,7 @@
 import "dart:convert";
 import "dart:math" show Random;
 
-import "package:moxxyv2/types/result.dart";
+import "package:moxxyv2/xmpp/types/result.dart";
 import "package:moxxyv2/xmpp/stringxml.dart";
 import "package:moxxyv2/xmpp/sasl/authenticator.dart";
 import "package:moxxyv2/xmpp/sasl/errors.dart";

lib/xmpp/types/result.dart

@@ -0,0 +1,13 @@
+/// Class that is supposed to by used with a state type S and a value type V.
+/// The state indicates if an action was successful or not, while the value
+/// type indicates the return value, i.e. a result in a computation or the
+/// actual error description.
+class Result<S, V> {
+  final S _state;
+  final V _value;
+
+  Result(S state, V value) : _state = state, _value = value;
+
+  S getState() => _state;
+  V getValue() => _value;
+}