Restructured the project structure back to the way it was, there's no reasonable way to split the modules

src/NadekoBot/_common/Configs/IConfigSeria.cs

@@ -0,0 +1,18 @@
+namespace NadekoBot.Common.Configs;
+
+/// <summary>
+///     Base interface for available config serializers
+/// </summary>
+public interface IConfigSeria
+{
+    /// <summary>
+    ///     Serialize the object to string
+    /// </summary>
+    public string Serialize<T>(T obj)
+        where T : notnull;
+
+    /// <summary>
+    ///     Deserialize string data into an object of the specified type
+    /// </summary>
+    public T Deserialize<T>(string data);
+}