refactor(Core/Server): Move Banner into separate file (#5207)

* refactor(Core/Server): Move Banner into separate file

* fix build

* Update Banner.cpp

* indent

* build

* build

* log

* LOG_INFO

* Update Banner.cpp

* Update Banner.h

* Update Main.cpp

* Update Main.cpp

* Update Master.cpp

* yes

* tes

src/common/Banner.h

@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2016+     AzerothCore <www.azerothcore.org>, released under GNU GPL v3 license, you may redistribute it and/or modify it under version 2 of the License, or (at your option), any later version.
+ */
+
+#ifndef AZEROTHCORE_BANNER_H
+#define AZEROTHCORE_BANNER_H
+
+#include "Define.h"
+
+namespace acore
+{
+    namespace Banner
+    {
+        void Show(char const* applicationName, void(*log)(char const* text), void(*logExtraInfo)());
+    }
+}
+
+#endif // AZEROTHCORE_BANNER_H