Renamed PluginManager to DiscordBotCore.

Revamped the Logger

DiscordBotCore/Interfaces/Logger/ILogger.cs

@@ -0,0 +1,19 @@
+using DiscordBotCore.Others;
+
+using System;
+using System.Collections.Generic;
+
+namespace DiscordBotCore.Interfaces.Logger
+{
+    public interface ILogger
+    {
+        public struct FormattedMessage { public string Message; public LogType Type; }
+        public string LogMessageFormat { get; set; }
+
+        public void Log(ILogMessage message);
+        public void LogException(Exception exception, object Sender);
+
+        public event EventHandler<FormattedMessage> OnFormattedLog;
+        public event EventHandler<ILogMessage> OnRawLog;
+    }
+}