feat: 添加删除配置项的功能

JackCraft.Config/Config.cs

@@ -106,4 +106,30 @@ public class Config
         var json = JsonConvert.SerializeObject(_configData, Formatting.Indented);
         File.WriteAllText(_configFile.FullName, json);
     }
+
+    public void Delete(string key)
+    {
+        LoadConfigData();
+        var keys = key.Split('.');
+        var currentData = _configData;
+
+        for (var i = 0; i < keys.Length - 1; i++)
+        {
+            var currentKey = keys[i];
+
+            if (!currentData.TryGetValue(currentKey, out var value)) return;
+
+            if (value is JObject jObject)
+                currentData[currentKey] =
+                    jObject.ToObject<Dictionary<string, object>>() ?? new Dictionary<string, object>();
+
+            currentData = (Dictionary<string, object>)currentData[currentKey];
+        }
+
+        var finalKey = keys[^1];
+        currentData.Remove(finalKey);
+
+        var json = JsonConvert.SerializeObject(_configData, Formatting.Indented);
+        File.WriteAllText(_configFile.FullName, json);
+    }
 }