🎨 Use feature based folder structure

lib/posts/compose.dart

@@ -0,0 +1,22 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:island/drive/drive_models/file.dart';
+import 'package:island/posts/posts_models/post.dart';
+
+part 'compose.freezed.dart';
+part 'compose.g.dart';
+
+@freezed
+sealed class PostComposeInitialState with _$PostComposeInitialState {
+  const factory PostComposeInitialState({
+    String? title,
+    String? description,
+    String? content,
+    @Default([]) List<UniversalFile> attachments,
+    int? visibility,
+    SnPost? replyingTo,
+    SnPost? forwardingTo,
+  }) = _PostComposeInitialState;
+
+  factory PostComposeInitialState.fromJson(Map<String, dynamic> json) =>
+      _$PostComposeInitialStateFromJson(json);
+}