refactor: Folder structure and MVC chat ui

lib/views/ui/archive_ui.dart

@@ -0,0 +1,45 @@
+import 'package:famedlysdk/famedlysdk.dart';
+import 'package:fluffychat/views/archive.dart';
+import 'package:fluffychat/views/widgets/list_items/chat_list_item.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+
+class ArchiveUI extends StatelessWidget {
+  final ArchiveController controller;
+
+  const ArchiveUI(this.controller, {Key key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        leading: BackButton(),
+        title: Text(L10n.of(context).archive),
+      ),
+      body: FutureBuilder<List<Room>>(
+        future: controller.getArchive(context),
+        builder: (BuildContext context, snapshot) {
+          if (snapshot.hasError) {
+            return Center(
+                child: Text(
+              L10n.of(context).oopsSomethingWentWrong,
+              textAlign: TextAlign.center,
+            ));
+          }
+          if (!snapshot.hasData) {
+            return Center(child: CircularProgressIndicator());
+          } else {
+            controller.archive = snapshot.data;
+            return ListView.builder(
+              itemCount: controller.archive.length,
+              itemBuilder: (BuildContext context, int i) => ChatListItem(
+                controller.archive[i],
+                onForget: controller.forgetAction,
+              ),
+            );
+          }
+        },
+      ),
+    );
+  }
+}