feat(chat-room): 채팅방 이미지 메시지

- 구매한 이미지 터치시 구매한 이미지만 모아볼 수 있는 뷰어 추가

SodaLive/Sources/Chat/Talk/Room/ChatRoomViewModel.swift

@@ -33,6 +33,16 @@ final class ChatRoomViewModel: ObservableObject {
     @Published var selectedMessage: ServerChatMessage? = nil
     @Published var selectedMessageIndex: Int = -1
     
+    @Published var isShowImageViewer = false
+    @Published var selectedImageIndex: Int = 0
+    
+    var ownedImageUrls: [String] {
+        return messages
+            .filter { $0.hasAccess }
+            .filter { $0.messageType.lowercased() == "image" && $0.imageUrl != nil && !$0.imageUrl.isNullOrBlank() }
+            .map { $0.imageUrl! }
+    }
+    
     // MARK: - Private
     private let userRepository = UserRepository()
     private let repository = ChatRoomRepository()
@@ -281,6 +291,13 @@ final class ChatRoomViewModel: ObservableObject {
             .store(in: &subscription)
     }
     
+    func showImageViewer(_ imageUrl: String?) {
+        if let imageUrl = imageUrl {
+            selectedImageIndex = ownedImageUrls.firstIndex(of: imageUrl) ?? 0
+            isShowImageViewer = true
+        }
+    }
+    
     private func checkQuotaStatus() {
         isLoading = true