Can delete a conversation from the list of conversations

lib/helpers/conversations_helper.dart

@@ -51,7 +51,7 @@ class ConversationsHelper {
     });
 
     // Update all conversation settings, if possible
-    if(settings.isOwner) {
+    if (settings.isOwner) {
       request.addString("name", settings.hasName ? settings.name : "false");
       request.addString("members", settings.members.join(","));
     }
@@ -61,6 +61,19 @@ class ConversationsHelper {
     return response.code == 200;
   }
 
+  /// Delete a conversation specified by its [id]
+  Future<bool> deleteConversation(int id) async {
+    final response = await APIRequest(
+      uri: "conversations/delete",
+      needLogin: true,
+      args: {
+        "conversationID": id.toString(),
+      },
+    ).exec();
+
+    return response.code == 200;
+  }
+
   /// Download the list of conversations from the server
   Future<ConversationsList> downloadList() async {
     final response =