Refactor Chat Detail Screen components and models for better organization

- Added reusable UI components for the Chat Detail Screen in ChatDetailComponents.kt, including DateHeader, TypingIndicator, MessageBubble, and more.
- Introduced MessageInputBar in ChatDetailInput.kt to handle message input and emoji picker functionality.
- Created data models for chat messages and replies in ChatDetailModels.kt, including ChatMessage and ReplyData.
- Implemented utility functions for chat details in ChatDetailUtils.kt, such as date formatting and avatar color generation.

app/src/main/java/com/rosetta/messenger/MainActivity.kt

@@ -687,7 +687,6 @@ fun MainScreen(
                         user = selectedUser!!,
                         currentUserPublicKey = accountPublicKey,
                         currentUserPrivateKey = accountPrivateKey,
-                        isDarkTheme = isDarkTheme,
                         onBack = { selectedUser = null },
                         onUserProfileClick = { user ->
                             // Открываем профиль другого пользователя