Scripts/Commands: Allow .maxskill to be used with self or selected player

Closes #15064

src/server/scripts/Commands/cs_misc.cpp

@@ -1325,8 +1325,8 @@ public:
 
     static bool HandleMaxSkillCommand(ChatHandler* handler, char const* /*args*/)
     {
-        Player* SelectedPlayer = handler->getSelectedPlayer();
-        if (!SelectedPlayer)
+        Player* player = handler->getSelectedPlayerOrSelf();
+        if (!player)
         {
             handler->SendSysMessage(LANG_NO_CHAR_SELECTED);
             handler->SetSentErrorMessage(true);
@@ -1334,7 +1334,7 @@ public:
         }
 
         // each skills that have max skill value dependent from level seted to current level max skill value
-        SelectedPlayer->UpdateSkillsToMaxSkillsForLevel();
+        player->UpdateSkillsToMaxSkillsForLevel();
         return true;
     }