feat(core): Add message of the day

SoObjects/SOGo/SOGoAdmin.h

@@ -0,0 +1,45 @@
+/*
+  Copyright (C) 2023 Alinto
+
+  This file is part of SOGo.
+
+  SOGo is free software; you can redistribute it and/or modify it under
+  the terms of the GNU Lesser General Public License as published by the
+  Free Software Foundation; either version 2, or (at your option) any
+  later version.
+
+  SOGo is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+  License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with SOGo; see the file COPYING.  If not, write to the
+  Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+  02111-1307, USA.
+*/
+
+#ifndef __SOGoAdmin_H__
+#define __SOGoAdmin_H__
+
+#import <Foundation/Foundation.h>
+
+@class NSObject;
+@class NSException;
+@class NSString;
+
+@interface SOGoAdmin : NSObject
+{
+  
+}
+
++ (id)sharedInstance;
+
+- (BOOL)isConfigured;
+- (NSString *)getMotd;
+- (NSException *)deleteMotd;
+- (NSException *)saveMotd:(NSString *)motd;
+
+@end
+
+#endif /* __SOGoAdmin_H__ */