style: remove repeated code, group in tasks

src/dumper/main.cs

@@ -10,33 +10,28 @@ if (!hasInitialized)
     return 1;
 }
 
-log.Info("Getting character data and icons");
+var dumpTasks = new (string Name, Action Execute)[]
+{
+    ("character", () => { dumper.DumpCharacters(); dumper.DumpCharacterIcons(); }),
+    ("item",      () => { dumper.DumpItems();      dumper.DumpItemIcons(); }),
+    ("offering",  () => { dumper.DumpOfferings();  dumper.DumpOfferingIcons(); })
+};
+
+foreach (var task in dumpTasks)
+{
+    log.Info($"Getting {task.Name} data and icons");
+
     try
     {
-    dumper.DumpCharacters();
-    dumper.DumpCharacterIcons();
+        task.Execute();
     }
     catch (Exception er)
     {
-    log.Error("Error while dumping characters");
+        log.Error($"Error while dumping {task.Name}s");
         log.Error("Exception: {0}", er.ToString());
         Console.ReadKey();
         return 1;
     }
-
-log.Info("Getting item data and icons");
-try
-{
-    dumper.DumpItems();
-    dumper.DumpItemIcons();
-}
-catch (Exception er)
-{
-    log.Error("Error while dumping items");
-    log.Error("Exception: {0}", er.ToString());
-    Console.ReadKey();
-    return 1;
-
 }
 
 log.Info("Dump finished");